diff --git a/app/crud/atbds.py b/app/crud/atbds.py
index 88e43f49..d0cb9163 100644
--- a/app/crud/atbds.py
+++ b/app/crud/atbds.py
@@ -101,6 +101,13 @@ def create(  # type: ignore
         which needs to be saved as a field of the AtbdVersion, gets generated when
         serializing the Atbd to the database."""
 
+        # Uniqueness validation for title
+        if (atbd_input.title is not None) and db.query(db.query(Atbds).filter(Atbds.title == atbd_input.title).exists()).scalar():
+            raise HTTPException(
+                status_code=400,
+                detail="The ATBD title is already in use. Please provide a different title.",
+            )
+
         # Unique validation
         if (
             atbd_input.alias is not None