This is a list of the Primetime Emmy Award for Outstanding Supporting Actor in a Drama Series winners:

• 1974: Michael Moriarty, The Glass Menagerie
• 1975-78 No Award Given
• 1979: Stuart Margolin, The Rockford Files
• 1980: Stuart Margolin, The Rockford Files
• 1981: Michael Conrad, Hill Street Blues
• 1982: Michael Conrad, Hill Street Blues
• 1983: James Coco, St. Elsewhere
• 1984: Bruce Weitz, Hill Street Blues
• 1985: Edward James Olmos, Miami Vice
• 1986: John Karlen;, Cagney & Lacey
• 1987: John Hillerman, Magnum, P.I
• 1988: Larry Drake, L.A. Law
• 1989: Larry Drake, L.A. Law
• 1990: Jimmy Smits, L.A. Law
• 1991: Timothy Busfield, thirtysomething
• 1992: Richard A. Dysart, L.A. Law
• 1993: Chad Lowe, Life Goes On
• 1994: Fyvush Finkel, Picket Fences
• 1995: Ray Walston, Picket Fences
• 1996: Ray Walston, Picket Fences
• 1997: Hector Elizondo, Chicago Hope
• 1998: Gordon Clapp, NYPD Blue
• 1999: Michael Badalucco, The Practice
• 2000: Richard Schiff, The West Wing
• 2001: Bradley Whitford, The West Wing
• 2002: John Spencer, The West Wing
• 2003: Joe Pantoliano, The Sopranos
• 2004: Michael Imperioli, The Sopranos
• 2005: William Shatner, Boston Legal
• 2006: ???