Art Carney -- Harry and Tonto as Harry Coombes Albert Finney -- Murder on the Orient Express as Hercule Poirot Dustin Hoffman -- Lenny as Lenny Bruce Jack Nicholson -- Chinatown as J.J. `` Jake '' Gittes Al Pacino -- The Godfather Part II as Michael Corleone Ellen Burstyn -- Alice Does n't Live Here Anymore as Alice Hyatt Diahann Carroll -- Claudine as Claudine Price Faye Dunaway -- Chinatown as Evelyn Cross Mulwray Valerie Perrine -- Lenny as Honey Bruce Gena Rowlands -- A Woman Under the Influence as Mabel Longhetti

Question: who won the oscar for best actor in 1975
Answer: Art Carney