| Sini | |
| Subdivision Type1: | Country |
| Subdivision Name1: | Turkey |
| Pushpin Map: | Turkey |
Sini Creek (tr|Sini Çayı) is a creek in Mersin Province, south Turkey.
The headwaters are in Toros Mountains to the south of Yarmasu village of Gülnar ilçe, where it is called Kazıklı Dere.[1] In the northern part of Bozyazı ilçe the creek is named Gökdere. With tributaries in Dereköy and Kızılca, it flows south.[2] The creek features a waterfall around the ruins of a medieval-age monastery named Karamanastır, after which there are a number of artificial ponds and a low power (0.42 MW) hydroelectric plant.[3] The creek's mouth discharges into the Mediterranean Sea within the Bozyazı ilçe center.