Karasu (Russian: Карасу; Nogai: Кара-Сув, Kara-Suv) is a rural locality (a selo) and the administrative centre of Karasuvsky Selsoviet, Nogaysky District, Republic of Dagestan, Russia.

[3] Karasu is located 10 km southeast of Terekli-Mekteb (the district's administrative centre) by road.

Terekli-Mekteb and Kalininaul are the nearest rural localities.

[4] Nogais live there.

This Republic of Dagestan location article is a stub.