James Tiberius Kirk, a character from the fictional Star Trek universe, was the Captain of the starship Enterprise (NCC-1701 and NCC-1701-A).
Played by William Shatner on Star Trek: The Original Series and several movies.
He followed Captain Christopher Pike and preceded Jean-Luc Picard, among others. Kirk was born in Iowa.
See also: Mr. Spock, Slash fiction