| Mamasın Dam | |
| Location: | Gücüncaya, Aksaray Province, Turkey |
| Operator: | State Hydraulic Works (DSİ) |
| Dam Height: | 44.9 m |
| Construction Began: | 1957 |
| Opening: | 1962 |
| Cost: | 14.477.000 old Turkish Lira |
| Res Catchment: | 82,15 Mio. m³ to 165,8m³ |
| Res Surface: | 9.95 km² to 16.2 km² |
| Coordinates: | 38.4023°N 34.1319°W |
Mamasın Dam is a dam in Turkey. The development was backed by the Turkish State Hydraulic Works.