| Kayacık Dam | |
| Dam Crosses: | Ayfinar Deresi |
| Location: | Gaziantep Province, Turkey |
| Operator: | State Hydraulic Works |
| Dam Volume: | 1853000m2 |
| Construction Began: | 1993 |
| Opening: | 2005 |
| Res Capacity Total: | 0.117km3 |
| Res Surface: | 11km2 |
| Coordinates: | 36.8231°N 37.5683°W |
| Location Map: | Turkey |
The Kayacık Dam impounds the Ayfinar Deresi, one of the two streams that join south of Gaziantep to form the Sajur River. It is located in Gaziantep Province, Turkey. The dam was constructed between 1993 and 2005 as part of the Southeastern Anatolia Project (Turkish: Güneydoğu Anadolu Projesi, or GAP). It is high and has a volume of . The reservoir created by the Kayacık Dam has a surface area of and a volume of and is used to irrigate an area of .