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- The Last Detail (1973) - Randy Quaid
- The Last Picture Show (1971) - Jeff Bridges
- The Last Picture Show (1971) - Ben Johnson
- The Last Samurai (2003) - Ken Watanabe
- The Last Station (2009) - Christopher Plummer
- Laura (1944) - Clifton Webb
- Lawrence of Arabia (1962) - Omar Sharif
- The Letter (1940) - James Stephenson
- The Life of Emile Zola (1937) - Joseph Schildkraut
- Little Big Man (1970) - Chief Dan George
- Little Children (2006) - Jackie Earle Haley
- Little Dorrit (1988) - Alec Guinness
- Little Miss Sunshine (2006) - Alan Arkin
- Longtime Companion (1990) - Bruce Davison
- The Lord of the Rings: The Fellowship of the Ring (2001) - Ian McKellen
- Lost Horizon (1937) - H. B. Warner
- Love Story (1970) - John Marley
- Lovers and Other Strangers (1970) - Richard S. Castellano
- The Luck of the Irish (1948) - Cecil Kellaway
- Lust for Life (1956) - Anthony Quinn
Read more about this topic: List Of Nominees For The Academy Award For Best Supporting Actor (by Film Title)