diff --git a/app/Domains/Catalog/Controllers/ProductAttributeController.php b/app/Domains/Catalog/Controllers/ProductAttributeController.php
new file mode 100644
index 0000000..3fbbd21
--- /dev/null
+++ b/app/Domains/Catalog/Controllers/ProductAttributeController.php
@@ -0,0 +1,85 @@
+<?php
+
+namespace App\Domains\Catalog\Controllers;
+
+use App\Domains\Catalog\Models\ProductAttribute;
+use App\Domains\Catalog\Requests\StoreProductAttributeRequest;
+use App\Domains\Catalog\Requests\UpdateProductAttributeRequest;
+use App\Domains\Catalog\Resources\ProductAttributeResource;
+use App\Domains\Catalog\Support\ProductAttributeType;
+use App\Http\Controllers\Controller;
+use Illuminate\Http\JsonResponse;
+use Illuminate\Http\Response;
+use Illuminate\Support\Facades\DB;
+
+class ProductAttributeController extends Controller
+{
+    public function index(): JsonResponse
+    {
+        $query = ProductAttribute::query()->with('options')->latest();
+
+        if (request()->filled('tenant_codigo')) {
+            $query->where('tenant_codigo', request('tenant_codigo'));
+        }
+
+        return ProductAttributeResource::collection($query->get())->response();
+    }
+
+    public function store(StoreProductAttributeRequest $request): JsonResponse
+    {
+        $attribute = DB::transaction(function () use ($request): ProductAttribute {
+            $validated = $request->validated();
+            $options = $validated['options'] ?? [];
+            unset($validated['options']);
+
+            $type = ProductAttributeType::from((string) $validated['type']);
+            if (! $type->supportsOptions()) {
+                $validated['metadata_schema'] = null;
+                $options = [];
+            }
+
+            /** @var ProductAttribute $attribute */
+            $attribute = ProductAttribute::query()->create($validated);
+            $attribute->options()->createMany($options);
+
+            return $attribute->load('options');
+        });
+
+        return ProductAttributeResource::make($attribute)->response()->setStatusCode(201);
+    }
+
+    public function show(ProductAttribute $productAttribute): ProductAttributeResource
+    {
+        return ProductAttributeResource::make($productAttribute->load('options'));
+    }
+
+    public function update(UpdateProductAttributeRequest $request, ProductAttribute $productAttribute): ProductAttributeResource
+    {
+        $productAttribute = DB::transaction(function () use ($request, $productAttribute): ProductAttribute {
+            $validated = $request->validated();
+            $options = $validated['options'] ?? [];
+            unset($validated['options']);
+
+            $type = ProductAttributeType::from((string) $validated['type']);
+            if (! $type->supportsOptions()) {
+                $validated['metadata_schema'] = null;
+                $options = [];
+            }
+
+            $productAttribute->update($validated);
+            $productAttribute->options()->delete();
+            $productAttribute->options()->createMany($options);
+
+            return $productAttribute->load('options');
+        });
+
+        return ProductAttributeResource::make($productAttribute);
+    }
+
+    public function destroy(ProductAttribute $productAttribute): Response
+    {
+        $productAttribute->delete();
+
+        return response()->noContent();
+    }
+}
diff --git a/app/Domains/Catalog/Models/ProductAttribute.php b/app/Domains/Catalog/Models/ProductAttribute.php
new file mode 100644
index 0000000..9d3f333
--- /dev/null
+++ b/app/Domains/Catalog/Models/ProductAttribute.php
@@ -0,0 +1,62 @@
+<?php
+
+namespace App\Domains\Catalog\Models;
+
+use App\Domains\Catalog\Support\ProductAttributeType;
+use App\Domains\Tenant\Models\Tenant;
+use Illuminate\Database\Eloquent\Attributes\Fillable;
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Database\Eloquent\Relations\HasMany;
+
+#[Fillable([
+    'tenant_codigo',
+    'codigo',
+    'nombre',
+    'is_required',
+    'metadata_schema',
+    'type',
+])]
+class ProductAttribute extends Model
+{
+    use HasFactory;
+
+    protected $table = 'productos_attributes';
+
+    /**
+     * @return array<string, string>
+     */
+    protected function casts(): array
+    {
+        return [
+            'is_required' => 'boolean',
+            'metadata_schema' => 'array',
+            'type' => ProductAttributeType::class,
+        ];
+    }
+
+    /**
+     * @return BelongsTo<Tenant, $this>
+     */
+    public function tenant(): BelongsTo
+    {
+        return $this->belongsTo(Tenant::class, 'tenant_codigo', 'codigo');
+    }
+
+    /**
+     * @return HasMany<ProductAttributeOption, $this>
+     */
+    public function options(): HasMany
+    {
+        return $this->hasMany(ProductAttributeOption::class, 'attribute_id')->orderBy('sort_order');
+    }
+
+    /**
+     * @return HasMany<ProductVariantDefinition, $this>
+     */
+    public function variantDefinitions(): HasMany
+    {
+        return $this->hasMany(ProductVariantDefinition::class, 'attribute_id');
+    }
+}
diff --git a/app/Domains/Catalog/Models/ProductAttributeOption.php b/app/Domains/Catalog/Models/ProductAttributeOption.php
new file mode 100644
index 0000000..9dd1f18
--- /dev/null
+++ b/app/Domains/Catalog/Models/ProductAttributeOption.php
@@ -0,0 +1,40 @@
+<?php
+
+namespace App\Domains\Catalog\Models;
+
+use Illuminate\Database\Eloquent\Attributes\Fillable;
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+
+#[Fillable([
+    'attribute_id',
+    'label',
+    'sort_order',
+    'metadata',
+])]
+class ProductAttributeOption extends Model
+{
+    use HasFactory;
+
+    protected $table = 'attribute_options';
+
+    /**
+     * @return array<string, string>
+     */
+    protected function casts(): array
+    {
+        return [
+            'sort_order' => 'integer',
+            'metadata' => 'array',
+        ];
+    }
+
+    /**
+     * @return BelongsTo<ProductAttribute, $this>
+     */
+    public function attribute(): BelongsTo
+    {
+        return $this->belongsTo(ProductAttribute::class, 'attribute_id');
+    }
+}
diff --git a/app/Domains/Catalog/Models/ProductVariant.php b/app/Domains/Catalog/Models/ProductVariant.php
index edefee7..15aee27 100644
--- a/app/Domains/Catalog/Models/ProductVariant.php
+++ b/app/Domains/Catalog/Models/ProductVariant.php
@@ -6,6 +6,7 @@ use Illuminate\Database\Eloquent\Attributes\Fillable;
 use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Database\Eloquent\Relations\HasMany;
 
 #[Fillable([
     'producto_id',
@@ -37,4 +38,12 @@ class ProductVariant extends Model
     {
         return $this->belongsTo(Product::class, 'producto_id');
     }
+
+    /**
+     * @return HasMany<ProductVariantDefinition, $this>
+     */
+    public function definitions(): HasMany
+    {
+        return $this->hasMany(ProductVariantDefinition::class, 'producto_variante_id');
+    }
 }
diff --git a/app/Domains/Catalog/Models/ProductVariantDefinition.php b/app/Domains/Catalog/Models/ProductVariantDefinition.php
new file mode 100644
index 0000000..07c9026
--- /dev/null
+++ b/app/Domains/Catalog/Models/ProductVariantDefinition.php
@@ -0,0 +1,36 @@
+<?php
+
+namespace App\Domains\Catalog\Models;
+
+use Illuminate\Database\Eloquent\Attributes\Fillable;
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+
+#[Fillable([
+    'producto_variante_id',
+    'attribute_id',
+    'value',
+])]
+class ProductVariantDefinition extends Model
+{
+    use HasFactory;
+
+    protected $table = 'productos_variantes_definiciones';
+
+    /**
+     * @return BelongsTo<ProductVariant, $this>
+     */
+    public function variant(): BelongsTo
+    {
+        return $this->belongsTo(ProductVariant::class, 'producto_variante_id');
+    }
+
+    /**
+     * @return BelongsTo<ProductAttribute, $this>
+     */
+    public function attribute(): BelongsTo
+    {
+        return $this->belongsTo(ProductAttribute::class, 'attribute_id');
+    }
+}
diff --git a/app/Domains/Catalog/Requests/StoreProductAttributeRequest.php b/app/Domains/Catalog/Requests/StoreProductAttributeRequest.php
new file mode 100644
index 0000000..5a45bed
--- /dev/null
+++ b/app/Domains/Catalog/Requests/StoreProductAttributeRequest.php
@@ -0,0 +1,68 @@
+<?php
+
+namespace App\Domains\Catalog\Requests;
+
+use App\Domains\Catalog\Support\ProductAttributeType;
+use Illuminate\Foundation\Http\FormRequest;
+use Illuminate\Validation\Rule;
+use Illuminate\Validation\Validator;
+
+class StoreProductAttributeRequest extends FormRequest
+{
+    public function authorize(): bool
+    {
+        return true;
+    }
+
+    /**
+     * @return array<string, mixed>
+     */
+    public function rules(): array
+    {
+        return [
+            'tenant_codigo' => ['required', 'string', 'exists:tenants,codigo'],
+            'codigo' => [
+                'required',
+                'string',
+                'max:255',
+                Rule::unique('productos_attributes', 'codigo')->where(
+                    fn ($query) => $query->where('tenant_codigo', $this->input('tenant_codigo'))
+                ),
+            ],
+            'nombre' => ['required', 'string', 'max:255'],
+            'is_required' => ['sometimes', 'boolean'],
+            'metadata_schema' => ['nullable', 'array'],
+            'type' => ['required', Rule::enum(ProductAttributeType::class)],
+            'options' => [
+                Rule::requiredIf(fn (): bool => in_array($this->input('type'), [
+                    ProductAttributeType::Select->value,
+                    ProductAttributeType::Multiselect->value,
+                ], true)),
+                Rule::prohibitedIf(fn (): bool => ! in_array($this->input('type'), [
+                    ProductAttributeType::Select->value,
+                    ProductAttributeType::Multiselect->value,
+                ], true)),
+                'array',
+            ],
+            'options.*.label' => ['required', 'string', 'max:255'],
+            'options.*.sort_order' => ['sometimes', 'integer'],
+            'options.*.metadata' => ['nullable', 'array'],
+        ];
+    }
+
+    public function withValidator(Validator $validator): void
+    {
+        $validator->after(function (Validator $validator): void {
+            $type = $this->input('type');
+            $supportsOptions = in_array($type, [ProductAttributeType::Select->value, ProductAttributeType::Multiselect->value], true);
+
+            if (! $supportsOptions && $this->filled('metadata_schema')) {
+                $validator->errors()->add('metadata_schema', 'The metadata_schema field is only allowed for select and multiselect attributes.');
+            }
+
+            if (! $supportsOptions && $this->filled('options')) {
+                $validator->errors()->add('options', 'Options are only allowed for select and multiselect attributes.');
+            }
+        });
+    }
+}
diff --git a/app/Domains/Catalog/Requests/UpdateProductAttributeRequest.php b/app/Domains/Catalog/Requests/UpdateProductAttributeRequest.php
new file mode 100644
index 0000000..f093b00
--- /dev/null
+++ b/app/Domains/Catalog/Requests/UpdateProductAttributeRequest.php
@@ -0,0 +1,61 @@
+<?php
+
+namespace App\Domains\Catalog\Requests;
+
+use App\Domains\Catalog\Models\ProductAttribute;
+use App\Domains\Catalog\Support\ProductAttributeType;
+use Illuminate\Foundation\Http\FormRequest;
+use Illuminate\Validation\Rule;
+use Illuminate\Validation\Validator;
+
+class UpdateProductAttributeRequest extends FormRequest
+{
+    public function authorize(): bool
+    {
+        return true;
+    }
+
+    /**
+     * @return array<string, mixed>
+     */
+    public function rules(): array
+    {
+        /** @var ProductAttribute|null $attribute */
+        $attribute = $this->route('productAttribute');
+
+        return [
+            'codigo' => [
+                'required',
+                'string',
+                'max:255',
+                Rule::unique('productos_attributes', 'codigo')
+                    ->ignore($attribute?->id)
+                    ->where(fn ($query) => $query->where('tenant_codigo', $attribute?->tenant_codigo)),
+            ],
+            'nombre' => ['required', 'string', 'max:255'],
+            'is_required' => ['sometimes', 'boolean'],
+            'metadata_schema' => ['nullable', 'array'],
+            'type' => ['required', Rule::enum(ProductAttributeType::class)],
+            'options' => ['sometimes', 'array'],
+            'options.*.label' => ['required', 'string', 'max:255'],
+            'options.*.sort_order' => ['sometimes', 'integer'],
+            'options.*.metadata' => ['nullable', 'array'],
+        ];
+    }
+
+    public function withValidator(Validator $validator): void
+    {
+        $validator->after(function (Validator $validator): void {
+            $type = $this->input('type');
+            $supportsOptions = in_array($type, [ProductAttributeType::Select->value, ProductAttributeType::Multiselect->value], true);
+
+            if (! $supportsOptions && $this->filled('metadata_schema')) {
+                $validator->errors()->add('metadata_schema', 'The metadata_schema field is only allowed for select and multiselect attributes.');
+            }
+
+            if (! $supportsOptions && $this->filled('options')) {
+                $validator->errors()->add('options', 'Options are only allowed for select and multiselect attributes.');
+            }
+        });
+    }
+}
diff --git a/app/Domains/Catalog/Resources/ProductAttributeOptionResource.php b/app/Domains/Catalog/Resources/ProductAttributeOptionResource.php
new file mode 100644
index 0000000..60b5aed
--- /dev/null
+++ b/app/Domains/Catalog/Resources/ProductAttributeOptionResource.php
@@ -0,0 +1,25 @@
+<?php
+
+namespace App\Domains\Catalog\Resources;
+
+use Illuminate\Http\Request;
+use Illuminate\Http\Resources\Json\JsonResource;
+
+/**
+ * @mixin \App\Domains\Catalog\Models\ProductAttributeOption
+ */
+class ProductAttributeOptionResource extends JsonResource
+{
+    /**
+     * @return array<string, mixed>
+     */
+    public function toArray(Request $request): array
+    {
+        return [
+            'id' => $this->id,
+            'label' => $this->label,
+            'sort_order' => $this->sort_order,
+            'metadata' => $this->metadata,
+        ];
+    }
+}
diff --git a/app/Domains/Catalog/Resources/ProductAttributeResource.php b/app/Domains/Catalog/Resources/ProductAttributeResource.php
new file mode 100644
index 0000000..0069e69
--- /dev/null
+++ b/app/Domains/Catalog/Resources/ProductAttributeResource.php
@@ -0,0 +1,29 @@
+<?php
+
+namespace App\Domains\Catalog\Resources;
+
+use Illuminate\Http\Request;
+use Illuminate\Http\Resources\Json\JsonResource;
+
+/**
+ * @mixin \App\Domains\Catalog\Models\ProductAttribute
+ */
+class ProductAttributeResource extends JsonResource
+{
+    /**
+     * @return array<string, mixed>
+     */
+    public function toArray(Request $request): array
+    {
+        return [
+            'id' => $this->id,
+            'tenant_codigo' => $this->tenant_codigo,
+            'codigo' => $this->codigo,
+            'nombre' => $this->nombre,
+            'is_required' => $this->is_required,
+            'metadata_schema' => $this->metadata_schema,
+            'type' => $this->type?->value ?? $this->type,
+            'options' => ProductAttributeOptionResource::collection($this->whenLoaded('options')),
+        ];
+    }
+}
diff --git a/app/Domains/Catalog/Support/ProductAttributeType.php b/app/Domains/Catalog/Support/ProductAttributeType.php
new file mode 100644
index 0000000..d3a67a8
--- /dev/null
+++ b/app/Domains/Catalog/Support/ProductAttributeType.php
@@ -0,0 +1,16 @@
+<?php
+
+namespace App\Domains\Catalog\Support;
+
+enum ProductAttributeType: string
+{
+    case Text = 'text';
+    case Numeric = 'numeric';
+    case Select = 'select';
+    case Multiselect = 'multiselect';
+
+    public function supportsOptions(): bool
+    {
+        return in_array($this, [self::Select, self::Multiselect], true);
+    }
+}
diff --git a/app/Domains/Catalog/routes/api.php b/app/Domains/Catalog/routes/api.php
index 34a85e1..2a181dc 100644
--- a/app/Domains/Catalog/routes/api.php
+++ b/app/Domains/Catalog/routes/api.php
@@ -3,8 +3,11 @@
 use App\Domains\Catalog\Controllers\BrandController;
 use App\Domains\Catalog\Controllers\CategoryController;
 use App\Domains\Catalog\Controllers\ProductController;
+use App\Domains\Catalog\Controllers\ProductAttributeController;
 use Illuminate\Support\Facades\Route;
 
 Route::apiResource('marcas', BrandController::class)->parameters(['marcas' => 'marca']);
 Route::apiResource('categorias', CategoryController::class)->parameters(['categorias' => 'categoria']);
 Route::apiResource('productos', ProductController::class);
+Route::apiResource('product-attributes', ProductAttributeController::class)
+    ->parameters(['product-attributes' => 'productAttribute']);
diff --git a/database/migrations/2026_06_24_000300_create_productos_attributes_table.php b/database/migrations/2026_06_24_000300_create_productos_attributes_table.php
new file mode 100644
index 0000000..bf47a7b
--- /dev/null
+++ b/database/migrations/2026_06_24_000300_create_productos_attributes_table.php
@@ -0,0 +1,41 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::create('productos_attributes', function (Blueprint $table) {
+            $table->id();
+            $table->string('tenant_codigo');
+            $table->string('codigo');
+            $table->string('nombre');
+            $table->boolean('is_required')->default(false);
+            $table->json('metadata_schema')->nullable();
+            $table->string('type');
+            $table->timestamps();
+
+            $table->foreign('tenant_codigo')
+                ->references('codigo')
+                ->on('tenants')
+                ->cascadeOnUpdate()
+                ->cascadeOnDelete();
+
+            $table->unique(['tenant_codigo', 'codigo']);
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('productos_attributes');
+    }
+};
diff --git a/database/migrations/2026_06_24_000310_create_attribute_options_table.php b/database/migrations/2026_06_24_000310_create_attribute_options_table.php
new file mode 100644
index 0000000..0d79eb3
--- /dev/null
+++ b/database/migrations/2026_06_24_000310_create_attribute_options_table.php
@@ -0,0 +1,31 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::create('attribute_options', function (Blueprint $table) {
+            $table->id();
+            $table->foreignId('attribute_id')->constrained('productos_attributes')->cascadeOnUpdate()->cascadeOnDelete();
+            $table->string('label');
+            $table->unsignedInteger('sort_order')->default(0);
+            $table->json('metadata')->nullable();
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('attribute_options');
+    }
+};
diff --git a/database/migrations/2026_06_24_000320_create_productos_variantes_definiciones_table.php b/database/migrations/2026_06_24_000320_create_productos_variantes_definiciones_table.php
new file mode 100644
index 0000000..b70edd0
--- /dev/null
+++ b/database/migrations/2026_06_24_000320_create_productos_variantes_definiciones_table.php
@@ -0,0 +1,38 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::create('productos_variantes_definiciones', function (Blueprint $table) {
+            $table->id();
+            $table->unsignedBigInteger('producto_variante_id');
+            $table->foreignId('attribute_id')->constrained('productos_attributes')->cascadeOnUpdate()->cascadeOnDelete();
+            $table->text('value')->nullable();
+            $table->timestamps();
+
+            $table->foreign('producto_variante_id')
+                ->references('id')
+                ->on('productos_variantes')
+                ->cascadeOnUpdate()
+                ->cascadeOnDelete();
+
+            $table->unique(['producto_variante_id', 'attribute_id'], 'prod_var_def_variant_attr_unique');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('productos_variantes_definiciones');
+    }
+};
diff --git a/tests/Feature/Catalog/ProductAttributeControllerTest.php b/tests/Feature/Catalog/ProductAttributeControllerTest.php
new file mode 100644
index 0000000..e797ad7
--- /dev/null
+++ b/tests/Feature/Catalog/ProductAttributeControllerTest.php
@@ -0,0 +1,86 @@
+<?php
+
+namespace Tests\Feature\Catalog;
+
+use App\Domains\Tenant\Models\Tenant;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Tests\TestCase;
+
+class ProductAttributeControllerTest extends TestCase
+{
+    use RefreshDatabase;
+
+    public function test_it_creates_a_select_attribute_with_options(): void
+    {
+        Tenant::create([
+            'codigo' => 'acme',
+            'nombre' => 'Acme',
+            'dominio' => 'acme.com',
+        ]);
+
+        $response = $this->postJson('/api/product-attributes', [
+            'tenant_codigo' => 'acme',
+            'codigo' => 'color',
+            'nombre' => 'Color',
+            'is_required' => true,
+            'type' => 'select',
+            'metadata_schema' => [
+                'swatch' => ['type' => 'hex'],
+            ],
+            'options' => [
+                [
+                    'label' => 'Red',
+                    'sort_order' => 1,
+                    'metadata' => ['hex' => '#ff0000'],
+                ],
+                [
+                    'label' => 'Blue',
+                    'sort_order' => 2,
+                    'metadata' => ['hex' => '#0000ff'],
+                ],
+            ],
+        ]);
+
+        $response
+            ->assertCreated()
+            ->assertJsonPath('tenant_codigo', 'acme')
+            ->assertJsonPath('codigo', 'color')
+            ->assertJsonPath('type', 'select')
+            ->assertJsonPath('options.0.label', 'Red')
+            ->assertJsonPath('options.1.metadata.hex', '#0000ff');
+
+        $this->assertDatabaseHas('productos_attributes', [
+            'tenant_codigo' => 'acme',
+            'codigo' => 'color',
+            'type' => 'select',
+        ]);
+
+        $this->assertDatabaseHas('attribute_options', [
+            'label' => 'Red',
+            'sort_order' => 1,
+        ]);
+    }
+
+    public function test_it_rejects_options_for_text_attributes(): void
+    {
+        Tenant::create([
+            'codigo' => 'acme',
+            'nombre' => 'Acme',
+            'dominio' => 'acme.com',
+        ]);
+
+        $response = $this->postJson('/api/product-attributes', [
+            'tenant_codigo' => 'acme',
+            'codigo' => 'material',
+            'nombre' => 'Material',
+            'type' => 'text',
+            'options' => [
+                ['label' => 'Cotton'],
+            ],
+        ]);
+
+        $response
+            ->assertUnprocessable()
+            ->assertJsonValidationErrors(['options']);
+    }
+}