| Official Name: | Sinac |
| Native Name: | Sinac |
| Settlement Type: | Village |
| Pushpin Label Position: | bottom |
| Subdivision Type: | Country |
| Subdivision Name: |  Croatia |
| Subdivision Type1: | Region |
| Subdivision Type2: | County |
| Subdivision Name2: | Lika-Senj County |
| Subdivision Type3: | Municipality |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 0.450 |
| Elevation M: | 450 |
| Population As Of: | 2021 |
| Population Total: | 498 |
| Timezone: | CET |
| Timezone Dst: | CEST |
| Utc Offset: | +1 |
| Utc Offset Dst: | +2 |
Sinac is a village near Otočac, Croatia. In the 2011 census, it had 563 inhabitants. in the 2021 census it had 498 inhabitants
It has an elevation of about 450 meters and a total area of about 37.4 kilometers2 above sea level and is located southeast of Otočac.
In July 2023, a monument to the people of Sinca who died in the Homeland War was unveiled in the town: Mate Laškarin died in 1991 in Drenovo Klanac as a member of the MUP reserve, Zoran Dubravčić in 1992 in Otočac as a member of the 2nd Battalion, 133rd Brigade of the HV, Milan Mravinac in 1993 in Sinac as a member of the Sinac ZNG Company, Božo Tonković in 1994 in Udol Sinac as a member of the Artillery-Rocket Division of the 133rd Brigade, and in the same unit was Zvonko Dubravčić, who was killed on August 4, 1995 in Sinac. . .