The Siege of Doboj (Serbo-Croatian: Opsada Doboja) was a military engagement fought between the Yugoslav People's Army and Bosnian Serb civilians and Bosniak forces defending the city of Doboj and its surroundings during the War in Bosnia. The Bosniak forces started its advance on 31 May 1992. The Muslims attacks and bombardment of Doboj culminated on 10 June 1992. The siege and a naval blockade by the Army of the Republic of Bosnia and Herzegovina caused the deaths of 105 civilians and 103 Serbian military personnel. Among the victims were 55 women and 6 children. The Bosniaks suffered 142 military fatalities.