diff --git a/backend/app/models/review.py b/backend/app/models/review.py
new file mode 100644
index 0000000..6d032d7
--- /dev/null
+++ b/backend/app/models/review.py
@@ -0,0 +1,39 @@
+"""Review gate model - HITL approval/rejection records."""
+from sqlalchemy import Column, String, Integer, Text, ForeignKey, DateTime
+from datetime import datetime
+from app.models.base import Base, TimestampMixin, TenantMixin
+
+
+class Review(Base, TimestampMixin, TenantMixin):
+    """A review gate record for human-in-the-loop.
+
+    Types: approval (before proceed), acceptance (final delivery),
+           arbitration (conflict resolution), quality_check
+    Status: pending, approved, rejected, escalated
+    """
+    __tablename__ = "reviews"
+
+    id = Column(Integer, primary_key=True, autoincrement=True)
+    task_id = Column(Integer, ForeignKey("tasks.id"), nullable=False, index=True)
+    project_id = Column(Integer, ForeignKey("projects.id"), nullable=False)
+
+    review_type = Column(String(50), default="approval")
+    status = Column(String(50), default="pending")
+
+    # Who is reviewing
+    reviewer_id = Column(Integer, ForeignKey("users.id"), nullable=True)
+    reviewer_role = Column(String(50), nullable=True)
+
+    # Review content
+    review_content = Column(Text, default="")
+    reviewer_comment = Column(Text, default="")
+
+    # Auto-check results (JSON: rules_check, llm_judge_score, etc.)
+    auto_check_result = Column(Text, default="{}")
+
+    # Timestamps
+    submitted_at = Column(DateTime, default=datetime.utcnow)
+    reviewed_at = Column(DateTime, nullable=True)
+
+    def __repr__(self):
+        return f"<Review #{self.id} task={self.task_id} [{self.status}]>"