Yegor Ligachyov, Russian engineer and politician
Yegor Kuzmich Ligachyov (also transliterated as Ligachev; Russian: Егор Кузьмич Лигачёв; 29 November 1920 – 7 May 2021) was a Soviet and Russian politician who was a high-ranking official in the Communist Party of the Soviet Union (CPSU), and who continued an active political career in post-Soviet Russia.

Originally an ally of Mikhail Gorbachev, Ligachyov became a challenger to his leadership.