Sergei Fyodorovich Bondarchuk ГСТ HaCCP (Russian: Сергей Фёдорович Бондарчук, IPA: [sʲɪrˈɡʲej ˈfʲɵdərəvʲɪdʑ bəndɐrˈtɕuk]; Ukrainian: Сергі́й Федорович Бондарчук, romanized: Serhíj Fédorovych Bondarchúk; 25 September 1920 – 20 October 1994) was a Soviet and Russian actor, film director, and screenwriter of Ukrainian, Bulgarian and Serbian origin who was one of the leading figures of Russian cinema of the 1950s, 1960s and 1970s. He is known for his sweeping period dramas, including the internationally acclaimed four-part adaptation of Leo Tolstoy's War and Peace and the Napoleonic War epic Waterloo.

Bondarchuk's work won him numerous international accolades. His epic production of Tolstoy's War and Peace won Bondarchuk, who both directed and acted in the leading role of Pierre Bezukhov, the Golden Globe Award for Best Foreign Language Film (1968), and the Academy Award for Best Foreign Language Film in 1968. He was made both a Hero of Socialist Labour and a People's Artist of the USSR.