Stepan Andriyovych Bandera (1 January 1909 – 15 October 1959) was a Ukrainian far-right leader of the radical militant wing of the Organization of Ukrainian Nationalists, the OUN-B.

a manufacturer of specialty chemicals headquartered in Northbrook, Illinois.

Stepan Osipovich Makarov was a Russian vice-admiral, commander in the Imperial Russian Navy, oceanographer, member of the Russian Academy of Sciences, and author of several books.

Stepan Georgevich Shaumian (1 October 1878 – 20 September 1918) was an Armenian Bolshevik revolutionary and politician active throughout the Caucasus.

Stepan Ivanovych Tarabalka (9 January 1993 – 13 March 2022), in English media also referred to as Stephen Tarabalka, was a Ukrainian military officer, a pilot and a major in the Ukrainian Air Force.

Stepan Maximovich Petrichenko (1892 – June 2, 1947) was a Russian revolutionary, an anarcho-syndicalist politician, the head of the self-styled "Soviet Republic of Soldiers and Fortress-Builders of Nargen" and in 1921, de facto leader of the Kronstadt Commune, and the leader of the revolutionary committee which led the Kronstadt rebellion of 1921.

Stepan Tymofiyovych Poltorak is a Ukrainian general who served as the Minister of Defence of Ukraine from 14 October 2014 until 29 August 2019.

Stepan Yakovlevich Rumovsky (Vladimir Governorate – , Saint Petersburg) was a Russian astronomer and mathematician, considered to be the first Russian astronomer of renown.