diff --git a/hibernate-core/src/main/java/org/hibernate/dialect/SQLServerDialect.java b/hibernate-core/src/main/java/org/hibernate/dialect/SQLServerDialect.java
index abfa96c340..8bbaf92a98 100644
--- a/hibernate-core/src/main/java/org/hibernate/dialect/SQLServerDialect.java
+++ b/hibernate-core/src/main/java/org/hibernate/dialect/SQLServerDialect.java
@@ -46,6 +46,7 @@ import org.hibernate.engine.jdbc.env.spi.IdentifierHelper;
 import org.hibernate.engine.jdbc.env.spi.IdentifierHelperBuilder;
 import org.hibernate.engine.jdbc.env.spi.NameQualifierSupport;
 import org.hibernate.engine.spi.SessionFactoryImplementor;
+import org.hibernate.exception.ConstraintViolationException;
 import org.hibernate.exception.LockTimeoutException;
 import org.hibernate.exception.spi.SQLExceptionConversionDelegate;
 import org.hibernate.internal.util.JdbcExceptionHelper;
@@ -720,6 +721,9 @@ public class SQLServerDialect extends AbstractTransactSQLDialect {
 			if ( 1222 == errorCode ) {
 				throw new LockTimeoutException( message, sqlException, sql );
 			}
+			if ( 2627 == errorCode || 2601 == errorCode ) {
+				throw new ConstraintViolationException( message, sqlException, sql );
+			}
 			return null;
 		};
 	}