Blaž Nikola Kraljevic (16 September 1947 – 9 August 1992) was a Bosnian Croat paramilitary leader who commanded the Croatian Defence Forces (HOS) during the Bosnian War.
An immigrant to Australia, Kraljevic joined the Croatian Revolutionary Brotherhood (HRB) upon his arrival there in 1967.
During his return to Yugoslavia in January 1992 he was appointed by Dobroslav Paraga, leader of the Croatian Party of Rights (HSP), as leader of the HOS in Bosnia and Herzegovina.
During the Bosnian War he advocated a Croat–Bosniak alliance, a view that ran counter to those of the Croatian government led by Croatian president Franjo Tudman and his Croatian Democratic Union (HDZ) party.
He denounced attempts by Mate Boban, president of the self-proclaimed Croatian Republic of Herzeg-Bosnia, and Radovan Karadžic, president of the self-proclaimed Republika Srpska, to divide Bosnia and Herzegovina and was appointed by Bosnian president Alija Izetbegovic as a member of Staff of the Army of the Republic of Bosnia and Herzegovina (ARBiH), shortly before his assassination by Croatian Defence Council (HVO) soldiers under the command of Mladen Naletilic.