Sulak (Russian: Сулак) is the name of several inhabited localities in Russia.
- Urban localities
- Sulak, Republic of Dagestan, an urban-type settlement under the administrative jurisdiction of Kirovsky City District of the City of Makhachkala in the Republic of Dagestan; 43°17′N 47°32′E / 43.283°N 47.533°E
- Rural localities
- Sulak, Penza Oblast, a selo in Volchkovsky Selsoviet of Belinsky District in Penza Oblast
- Sulak, Saratov Oblast, a selo in Krasnopartizansky District of Saratov Oblast
- Sulak, Tambov Oblast, a selo in Sulaksky Selsoviet of Umyotsky District in Tambov Oblast