The Siege of Doboj (Serbo-Croatian: Opsada Doboja) was a military engagement fought between the Bosniak and Serb forces defending the city of Doboj and its surroundings during the War in Bosnia.

Siege of Doboj
Part of the Bosnian War
Date 20 May 1992 – 20 October 1992 Location Doboj Result Serb victory •Siege lifted •Bosniak troops withdraw
Belligerents
Republika Srpska	Bosnia and Herzegovina
Casualties and losses
105 Serbian civilians killed (55 women, 6 children) 10,000 Serbian refugees	142 Bosniak soldiers killed

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.