Kotor-Varoš was a srez (a second-level administrative unit) centered at Kotor Varoš, that existed during the Kingdom of Yugoslavia and Socialist Yugoslavia.
It had earlier been a kreis of Austro-Hungarian Bosnia and Herzegovina.
It was a subdivision of the Vrbas Oblast in 1922–29, Vrbas Banovina in 1929–41, and thereafter the Socialist Republic of Bosnia and Herzegovina.
It was abolished in 1955.
[1][page needed] In 1948[2] and 1953, it included the six municipalities of Kotor Varoš, Previle, Skender Vakuf, Šiprage, Vrbanjci and Zabrđe.