| Tekfur ambarı | |
| Alternate Name: | (Tekir Ambarı) |
| Map Type: | Turkey |
| Relief: | 1 |
| Coordinates: | 36.3833°N 88°W |
| Location: | Silifke |
| Part Of: | Mersin Province |
Tekfur ambarı (a.k.a. Tekir ambarı, literally "lord's storehouse") is a large cistern in Silifke (Seleukeia) ilçe district center of Mersin Province, Turkey. A part of the city of Silifke, it is situated to the west of city center and to the east of Silifke castle at 36.3833°N 88°W . It was built during the early years of Byzantine Empire. The building material is face stone. The west to east dimension is and the north to south dimension is . The depth of the cistern is . The total water capacity is about 12 000 tonnes. At the east side of the cistern there is a spiral staircase. There are 8 niches at the 46 m dimension and 5 niches at the 23 m dimension.[1]