Sanski Most is a town and municipality in northwestern Bosnia and Herzegovina. It is located on the Sana River in Bosanska Krajina, between Prijedor and Ključ. Administratively it is part of the Una-Sana Canton of the Federation of Bosnia and Herzegovina. The size of the municipality's area more than doubled after 1961. Therefore the population rose quite a bit. The town of Sanski Most itself had 17,144 residents in 1991.
During the Bosnian war, Sanski Most was seized by the Serbian forces of the Republika Srpska and remained under Bosnian-Serb control from the spring of 1992 to 1995. During this time, many non-Serbs were killed or forced to flee. In October 1995, the city was occupied by the forces of the Army of Bosnia-Herzegovina, shortly before the end of the war.