Don Sinclair Davis was an American character actor best-known for playing General Hammond in the television series Stargate SG-1, and earlier for playing Major Garland Briggs on the television series Twin Peaks. He was also a theater professor, painter, and United States Army captain.

• Stargate SG-1 (1997)

  
• Omen IV: The Awakening (1991)

  
• Far Cry (2008)

  
• Hideaway (1995)

  
• Alaska (1996)