亞塞諾瓦茨集中營（克羅埃西亞語：Logor Jasenovac、塞爾維亞語：Логор Јасеновац、意第緒語：יאסענאוואץ‎、希伯來語：יסנובץ‎），二戰時間在克羅埃西亞獨立國建立的滅絕營^] ，位於亞塞諾瓦茨附近。該集中營是唯一非納粹德國運營的滅絕營^[4]。1941年，烏斯塔沙建立亞塞諾瓦茨集中營。1945年4月，亞塞諾瓦茨集中營關閉。該集中營的主要屠殺對象是塞爾維亞人、猶太人、羅姆人。根據資料顯示出亞塞諾瓦茨集中營沒有像是德國納粹黨,在奧地利的奧斯維茲集中營有毒氣室,將囚犯毒死或是燒死,牠們直接用刺刀殺死,塞爾維亞人、猶太人、羅姆人至少50萬人左右,可以說是慘不忍睹.

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烏斯塔沙－克羅埃西亞革命運動（克羅埃西亞語：Ustaša – Hrvatski revolucionarni pokret），簡稱烏斯塔沙，是克羅埃西亞歷史上的一個極右翼民族主義組織。「烏斯塔沙」意為「崛起」。根據統計，烏斯塔沙建立超過十個集中營，殺害達九萬三千人；但是塞爾維亞人的切特尼克（一個名義上反納粹德國，實際上反共的極右翼民族主義組織）也殺害不少克羅埃西亞人，這都是導致南斯拉夫族群問題進一步惡化的歷史原因。

1941年納粹德國與義大利王國及其盟國進攻南斯拉夫，烏斯塔沙組織的軍隊便趁此時宣布克羅埃西亞獨立，並成立克羅埃西亞獨立國，並加入軸心國陣營，烏斯塔沙政權和墨索里尼簽署條約使克羅埃西亞成為義大利的保護國。而且烏斯塔沙組織也受到天主教會的支持。1945年烏斯塔沙被由狄托率領的人民軍擊潰，克羅埃西亞再度併入南斯拉夫。

The Ustaša – Croatian Revolutionary Movement (Croatian: Ustaša – Hrvatski revolucionarni pokret), commonly known as Ustaše (pronounced [ûstaʃe]) or by anglicised versions Ustasha or Ustashe,^[] was a Croatian fascist and ultranationalist organization^[] active, as one organization, between 1929 and 1945. Its members murdered hundreds of thousands of Serbs, Jews,^[] and Roma as well as political dissidents in Yugoslavia during World War II.^[]

Much of the ideology of the Ustaše was based on Nazi racial theory. Like the Nazis, the Ustaše deemed Jews, Romani, and Slavs to be sub-humans (Untermenschen). They endorsed the claims from German racial theorists that Croats were not Slavs but a Germanic race. Their genocides against Serbs, against the Jews, and against the Romani were thus expressions of Nazi racial ideology. However, the Ustaše viewed the Bosniaks as "Muslim Croats," not Slavs, and as a result did not persecute Muslim Bosniaks on the basis of race^]

In addition to Nazi racial theory, the Ustaše ideology incorporated fascism, Roman Catholicism and Croatian nationalism.^] The Ustaše supported the creation of a Greater Croatia that would span the Drina River and extend to the border of Belgrade.^] The movement emphasized the need for a racially "pure" Croatia and promoted genocide against Serbs, Jews and Romani people, and persecution of anti-fascist or dissident Croats and Bosniaks.

The Ustaše espoused Roman Catholicism and Islam as the religions of the Croats and Bosniaks and condemned Orthodox Christianity, which was the main religion of the Serbs. Roman Catholicism was identified with Croatian nationalism,^[9] while Islam, which had a large following in Bosnia and Herzegovina, was praised by the Ustaše as the religion that "keeps true the blood of Croats."^[

It was founded as a nationalist organization that sought to create an independent Croatian state.^[11] When the Ustaše came to power in the NDH, a quasi-protectorate puppet state established by Fascist Italy and Nazi Germany during World War II, its military wings became the Army of the Independent State of Croatia and the Ustaše militia (Croatian: Ustaška vojnica).^[ However, the Ustaše lacked support among ordinary Croats and never accrued any significant support among the populace. The Ustaše regime was backed by parts of the Croatian population that during the interwar period had felt oppressed in the Serbian-led Yugoslavia. Most of the support it had initially gained by creating a Croat national state was lost because of the brutal practices it used.^[

The movement functioned as a terrorist organization before World War II^] but in April 1941, they were appointed to rule a part of Axis-occupied Yugoslavia as the Independent State of Croatia (NDH), which has been described as both an Italian-German quasi-protectorate,^[] and as a puppet state of Nazi Germany