Čerin is a town located in the Herzegovina region of Bosnia and Herzegovina. It is in the municipality of Čitluk in the Herzegovina-Neretva Canton of the Federation of Bosnia and Herzegovina.
The town has traditionally been the center of upper Brotnjo. The town was home to the Church of St. Stephen, which was toppled by the Ottoman Empire in 1668. In 1938, HKD Napredak opened a branch office in Čerin.
In 1991, the town had a population of 2,117, composed of 2,087 Croats (99%) and 30 Bosniaks (1%).
Coordinates: 43°16′N 17°38′E / 43.267°N 17.633°E / 43.267; 17.633