Slava Stetsko (Ukrainian: Ярослава Йосипівна Стецько, Polish: Sława Stećko) (14 May 1920, Romanivka near Ternopil - 12 March 2003, Munich) was a member of the Ukrainian collaborationist paramilitary Organization of Ukrainian Nationalists (OUN), and after WWII worked together with her husband Yaroslav Stetsko for the Anti-Bolshevik Bloc of Nations (ABN), an anti-communist umbrella organization, funded by German, and likely also American, secret services.
Born Anna Yevheniia Muzyka (Ukrainian: Анна Євгенія Музика), Slava Stetsko became a member of the Organization of Ukrainian Nationalists (OUN) in 1938. When a schism occurred within the OUN in 1940, she went with the faction of the OUN led by Stepan Bandera (OUN-B). During World War II, she served as a nurse in the Ukrainian Insurgent Army (UPA), and was arrested by Germans in Lviv in 1943. She remained in Germany as an émigré after her release in 1944.
After the war, she married Yaroslav Stetsko in Munich, and together with her husband, built up the ABN. Both lived in the Zeppelinstraße 67, and in the early years of their marriage Slava Stetsko studied at the Ukrainian Free University of Munich.
During her time at the ABN, she served as editor of the organization's periodicals and as organizer of their congresses. From 1986 onward she was also a member of the presidium of the World Anti-Communist League (WACL). Both organizations, WACL and ABN, were supported by Western intelligence services (CIA, BND) and experienced their political, organizational and financial peak during the Cold War.
After the death of her husband in 1986, she became became president of the ABN, and in 1991 also of the OUN-B.
Slava Stetsko returned to Ukraine in July 1991. The following year, she formed, and became a chairman of, the Congress of Ukrainian Nationalists (CUN), the political party that was established in Ukraine on the basis of the Organization of Ukrainian Nationalists (OUN), which she led for over a decade.
She died in Munich on March 12, 2003, after a short illness, and was buried at Baikove Cemetery in Kyiv.