The 30th Slovenia Division () was a Yugoslav Partisan division formed on 6 October 1943 in Western Slovenia.
The division was formed from the "GoriÃÂka", "Simon GregorÃÂiÃÂ" and the First SoÃÂa Brigade. The first two brigades were later replaced by the Second and Third SoÃÂa Brigades. The Division became part of the 9th Corps on 22 December 1943, and was known as the 30th Goriska or Gorizia Division.
The division operated mostly in Slovenia during its existence. It operated until the end of 1943 in the Upper SoÃÂa Valley. In January 1944, it fought with German units that penetrated the Banjà ¡ice Plateau and the Trnovo Forest Plateau and in February 1944 went on march in Beneska Slovenija. In first half of March 1944, it attacked German communication lines in the Upper Soca Valley.
After that, it operated in the Cerkljanska region, around Idrija and in the Vipava Valley.
In February and March 1945, it was engaged in heavy battles around Trnovski gozd, especially during the last German offensive Unternehmen Rübezahl III against the 9th NOVJ Corps, in the second half of March 1945. At the beginning of April 1945, the 30th Division managed to break through the German encirclement, but suffered considerable losses.
At the end of April 1945, it took part in final battles for liberation of Yugoslavia; and on 1 May 1945, it participated in the attack on Opicina and in the liberation of Trieste. On 3 May 1945, the 30th Division NOVJ was disbanded, and its units were transferred among different KNOJ (Defence Corps) units.