James Kirk
- Full Name: James Tiberius Kirk
- Born: March 22, 2233; Riverside, Iowa, United States of America, Earth (ENT: "In a Mirror, Darkly, Part II"; ENT Novel: Last Full Measure)
- Species: Human
- Gender: Male
- Father: George Kirk Sr.
- Mother: Winona Kirk
- Brother: George Kirk Jr.
- Son: David Marcus