and 54 seconds Longest performance to win and be nominated for an acting Oscar Vivien Leigh in Gone with the Wind (1939) – 2 hours, 23 minutes and 32 seconds Longest performance to win a supporting acting Oscar Tatum O'Neal in Paper Moon (1973) – 1 hour, 6 minutes and 58 seconds Longest male performance to win an acting Oscar Charlton Heston in Ben-Hur (1959) – 2 hours, 1 minute and 23 seconds Longest male performance to be nominated for an acting Oscar Denzel Washington in Malcolm X (1992) – 2 hours, 21 minutes and 58 seconds Longest male performance to win a supporting acting Oscar Mahershala Ali in Green Book (2018) – 1 hour, 6 minutes and 38 seconds Longest male performance to be nominated for a supporting acting Oscar Frank Finlay in Othello (1965) – 1 hour, 30 minutes and 43 seconds Longest female performance to be nominated for a supporting acting Oscar Jennifer Jones in Since You Went Away (1944) – 1 hour, 15 minutes and 38 seconds Most awards by an African American actor Two African-American actors have won two Oscars: Denzel Washington, winning Best Supporting Actor for Glory (1989) and Best Actor for Training Day (2001) Mahershala Ali winning Best Supporting Actor for Moonlight (2016) and for Green Book (2018) Most awards for one acting performance Harold Russell played Homer Parish in The Best Years of Our Lives in 1946. For this role he received 2 Oscars, one for Best Supporting Actor and an honorary award for being an inspiration to all returning veterans Most nominations for one acting performance Barry Fitzgerald was nominated as Best Actor and won for Best Supporting Actor for his role as Father Fitzgibbon in 1944's Going My Way Only performer to win portraying multiple characters in the same film Lee Marvin won for playing Kid Shelleen and Tim Strawn in Cat Ballou Most separate roles played in a single movie to be nominated for an Oscar Peter Sellers was nominated for Best Actor for playing 3 people (Lionel Mandrake, President Merkin Muffley and Dr. Strangelove) in Dr. Strangelove (1964) Years where all four Acting winners were born outside the United States 1964 Best Actor – Rex Harrison for My Fair Lady, United Kingdom Best Actress – Julie Andrews for Mary Poppins, United Kingdom Best Supporting Actor – Peter Ustinov for Topkapi, United Kingdom Best Supporting Actress – Lila Kedrova