4th Division (Yugoslav Partisans)

{{Infobox military unit

| unit_name = 4th Krajina Division

| image = Flag of Yugoslavia (1943–1946).svg

| image_size = 220

| caption = Flag of Democratic Federal Yugoslavia (used by the Partisans)

| dates = 1942–1945

| disbanded =

| country = Democratic Federal Yugoslavia

| allegiance =

| branch = Yugoslav Partisan Army

| type = Infantry

| role =

| size = 4,371 (upon formation)

| command_structure = 1st Bosnian Corps (9 November 1942 - 11 May 1943)
2nd Bosnian Corps (11 May 1943 - 1945)

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| battles = World War II in Yugoslavia

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| notable_commanders = Josip Mažar Šoša

}}

The 4th Krajina Division (Serbo-Croatian Latin: Četvrta krajiška divizija) was a Yugoslav Partisan division formed in Glamočko polje on 9 November 1942. On the day of formation it consisted of 4,371 soldiers in three brigades: 2nd Krajina Brigade, 5th Krajina Brigade and 6th Krajina Brigade. Commander of the division was Josip Mažar Šoša, while its political commissar was Milinko Kušić.{{Cite book|last=Karasijević|first=Drago|title=Četvrta krajiška NOU divizija|publisher=Vojnoizdavački i novinarski centar|year=1988|location=Belgrade|pages=20–22}} During the war it mostly operated in western and central Bosnia. It was a part of 1st Bosnian Corps until 11 May 1943 when it became part of 2nd Bosnian Corps.{{Cite web|title=4th Krajina Division|url=http://www.vojska.net/eng/world-war-2/yugoslavia/division/4/|url-status=live|access-date=27 February 2021|website=vojska.net|archive-url=https://web.archive.org/web/20071012131925/http://www.vojska.net:80/eng/world-war-2/yugoslavia/division/4/ |archive-date=2007-10-12 }}{{command structure|name=4th Krajina Division|date=9 November 1942|parent=1st Bosnian Corps|subordinate=2nd Krajina Brigade
5th Krajina Brigade
6th Krajina Brigade}}