Kuysun (; ) is a rural locality (a selo) in Magaramkentsky District, Republic of Dagestan, Russia. The population was 3,197 as of 2010. There are 34 streets.Село Куйсун на карте
Geography Kuysun is located 188 southeast of Makhachkala. Gilyar and Ledzhet are the nearest rural localities.Расстояние от Махачкалы до Куйсуна ~ 188 км
Nationalities Lezgins live there.
References