1936-present: Wikipedia

YearActorMovie
2019Brad PittOnce Upon a Time in Hollywood
2018Mahershala AliGreen Book
2017Sam RockwellThree Billboards Outside Ebbing, Missouri
2016Mahershala AliMoonlight
2015Mark RylanceBridge of Spies
2014J.K. SimmonsWhiplash
2013Jared LetoDallas Buyers Club
2012Christoph WaltzDjango Unchained
2011Christopher PlummerBeginners
2010Christian BaleThe Fighter
2009Christoph WaltzInglourious Basterds
2008Heath LedgerThe Dark Knight
2007Javier BardemNo Country for Old Men
2006Alan ArkinLittle Miss Sunshine
2005George ClooneySyriana
2004Morgan FreemanMillion Dollar Baby
2003Tim RobbinsMystic River
2002Chris CooperAdaptation
2001Jim BroadbentIris
2000Benicio del ToroTraffic
1999Michael CaineThe Cider House Rules
1998James CoburnAffliction
1997Robin WilliamsGood Will Hunting
1996Cuba Gooding, Jr.Jerry Maguire
1995Kevin SpaceyThe Usual Suspects
1994Martin LandauEd Wood
1993Tommy Lee JonesThe Fugitive
1992Gene HackmanUnforgiven
1991Jack PalanceCity Slickers
1990Joe PesciGoodfellas
1989Denzel WashingtonGlory
1988Kevin KlineA Fish Called Wanda
1987Sean ConneryThe Untouchables
1986Michael CaineHannah and Her Sisters
1985Don AmecheCocoon
1984Haing S. NgorThe Killing Fields
1983Jack NicholsonTerms of Endearment
1982Louis Gossett, Jr.An Officer and a Gentleman
1981John GielgudArthur
1980Timothy HuttonOrdinary People
1979Melvyn DouglasBeing There
1978Christopher WalkenThe Deer Hunter
1977Jason RobardsJulia
1976Jason RobardsAll the President’s Men
1975George BurnsThe Sunshine Boys
1974Robert De NiroThe Godfather Part II
1973John HousemanThe Paper Chase
1972Joel GreyCabaret
1971Ben JohnsonThe Last Picture Show
1970John MillsRyan’s Daughter
1969Gig YoungThey Shoot Horses, Don’t They?
1968Jack AlbertsonThe Subject Was Roses
1967George KennedyCool Hand Luke
1966Walter MatthauThe Fortune Cookie
1965Martin BalsamA Thousand Clowns
1964Peter UstinovTopkapi
1963Melvyn DouglasHud
1962Ed BegleySweet Bird of Youth
1961George ChakirisWest Side Story
1960Peter UstinovSpartacus
1959Hugh GriffithBen-Hur
1958Burl IvesThe Big Country
1957Red ButtonsSayonara
1956Anthony QuinnLust for Life
1955Jack LemmonMister Roberts
1954Edmond O’BrienThe Barefoot Contessa
1953Frank SinatraFrom Here to Eternity
1952Anthony QuinnViva Zapata!
1951Karl MaldenA Streetcar Named Desire
1950George SandersAll About Eve
1949Dean JaggerTwelve O’Clock High
1948Walter HustonThe Treasure of the Sierra Madre
1947Edmund GwennMiracle on 34th Street
1946Harold RussellThe Best Years of Our Lives
1945James DunnA Tree Grows in Brooklyn
1944Barry FitzgeraldGoing My Way
1943Charles CoburnThe More the Merrier
1942Van HeflinJohnny Eager
1941Donald CrispHow Green Was My Valley
1940Walter BrennanThe Westerner
1939Thomas MitchellStagecoach
1938Walter BrennanKentucky
1937Joseph SchildkrautThe Life of Emile Zola
1936Walter BrennanCome and Get It