| Type: | municipality |
| Mehmetli | |
| Coordinates: | 37.4833°N 39°W |
| Province: | Osmaniye |
| District: | Sumbas |
| Population Total: | 2210 |
| Population As Of: | 2022 |
| Elevation M: | 130 |
| Postal Code: | 80940 |
| Area Code: | 0328 |
Mehmetli is a town (belde) in the Sumbas District, Osmaniye Province, Turkey.[1] Its population is 2,210 (2022).[2] It is at the southeast of Mehmetli Dam (also called Kesiksuyu Dam) reservoir and north of Sumbas. Distance to Osmaniye, the province center, is . The name of the town refers to personal name Mehmet which is very common in the settlement. The settlement was founded in 1835 as a small village of several families. In 1998 it was declared a seat of township.[3]