The term Tristar (meaning three star) may refer to:

  • Tri-star (wheel arrangement)
  • Lockheed L-1011 TriStar, a widebodied airliner
    • Lockheed TriStar (RAF), L-1011-based tankers used by the Royal Air Force
  • TriStar Pictures, a film production company
  • Tristar 64, an add-on for the Nintendo 64 game console
  • Tri-star, an add-on for the Super Nintendo game console, see Super 8 (video game accessory)
  • Tristar-class cruiser from Robotech
  • Tristar Productions
  • TriStar Health System, the brand name for HCA Hospitals in Tennessee
  • TriStar Music, a defunct record label distributed by Sony Music Entertainment
  • "Tristar (film)", a 1996 Hong Kong movie directed by Tsui Hark
  • Tristar (band) Popular Kazakh musical band