Kirk could refer to:

• James T. Kirk, Captain of the USS Enterprise (NCC-1701) and USS Enterprise (NCC-1701-A)
  • James T. Kirk, Captain of the USS Enterprise (NCC-1701), with a different past and destiny.
  • James T. Kirk, Mirror Universe counterpart.
  • Jane T. Kirk, a female incarnation of Jim Kirk apparently from a parallel universe.
  • James, a duplicate of James T. Kirk created through the Phoenix Process.
  • Kirk Defense, a tactic used by James T. Kirk.
• Kirk family:
  • Tiberius "Samuel" Kirk
  • James Kirk, son of Samuel
  • George Samuel Kirk, Sr., son of Samuel and father of James T.
    • George Samuel Kirk, Sr. Mirror Universe counterpart.
  • Benjamin Kirk, another man considered to be James T. Kirk's Father.
  • Eugene Claudius Kirk, an alternate James T. Kirk father.
  • Winona Kirk, wife of George
    • Winona Kirk Mirror Universe counterpart.
  • George Samuel Kirk, Jr., son of George and Winona
  • Aurelan Kirk, wife of George Jr.
  • Peter Kirk, son of George Jr.
  • Alexander Kirk, son of George Jr.
  • Julius Kirk, son of George Jr.
  • Craig Kirk, son of George Jr.
  • Sinjin Kirk, son of Craig
  • Jamie Samantha Kirk, 24th century Kirk
  • Joseph Kirk, the son of James T.
• Starships and vehicles:
  • USS James T. Kirk (Akira-class)
  • USS James T. Kirk (NCC-91277 Exeter-class)