diff --git a/veza-backend-api/migrations/101_product_reviews.sql b/veza-backend-api/migrations/101_product_reviews.sql
new file mode 100644
index 000000000..19b079c98
--- /dev/null
+++ b/veza-backend-api/migrations/101_product_reviews.sql
@@ -0,0 +1,23 @@
+-- v0.403 R1: Product reviews (buyer reviews on purchased products)
+-- UNIQUE(product_id, buyer_id) - one review per buyer per product
+
+DO $$
+BEGIN
+  IF EXISTS (SELECT 1 FROM information_schema.tables WHERE table_schema = 'public' AND table_name = 'products')
+     AND EXISTS (SELECT 1 FROM information_schema.tables WHERE table_schema = 'public' AND table_name = 'orders') THEN
+    IF NOT EXISTS (SELECT 1 FROM information_schema.tables WHERE table_schema = 'public' AND table_name = 'product_reviews') THEN
+      CREATE TABLE product_reviews (
+        id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+        product_id UUID NOT NULL REFERENCES products(id) ON DELETE CASCADE,
+        buyer_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+        order_id UUID NOT NULL REFERENCES orders(id) ON DELETE CASCADE,
+        rating INTEGER NOT NULL CHECK (rating >= 1 AND rating <= 5),
+        comment TEXT,
+        created_at TIMESTAMPTZ DEFAULT NOW(),
+        UNIQUE(product_id, buyer_id)
+      );
+      CREATE INDEX idx_product_reviews_product_id ON product_reviews(product_id);
+      CREATE INDEX idx_product_reviews_buyer_id ON product_reviews(buyer_id);
+    END IF;
+  END IF;
+END $$;