Čitluk (Latin: Aequum) is a village near Sinj, Split-Dalmatia County, Croatia. It is located at 43°45′N 16°38′E / 43.750°N 16.633°E and has a population of 552 (census 2001).
In 42, the colony of Aequum was founded by Emperor Claudius, perhaps sparked by an attempted revolt of the governor of Dalmatia, Lucius Arruntius Camillus Scribonianus.