Grigori Kromanov (8 March 1926 in Tallinn – 18 July 1984 in Lahe, Lääne-Virumaa) was an Estonian theatre and film director. He directed some of the best known Estonian movies, including Viimne reliikvia (The Last Relic) and Dead Mountaineer's Hotel. His 1976 film Diamonds for the Dictatorship of the Proletariat is based on the homonymous 1974 detective novel by Yulian Semyonov.