Kirk William Caldwell (born September 4, 1952) is an American politician who served as the mayor of Honolulu, Hawaii, from 2013 to 2021.

[2] On July 20, 2010, Caldwell assumed the position of interim mayor after Mufi Hannemann resigned to compete in the 2010 Hawaii gubernatorial election.

[7] Caldwell narrowly won reelection on November 8, 2016, after facing a runoff with former Republican congressman Charles Djou, 52.2% to 47.8%.

[8] Though both candidates supported the municipal rail project, cost overruns were an issue, as well as Caldwell's alleged interference with the Ethics Commission.

The city had made similar efforts that resulted in a win for homeless advocates at the cost of a half million dollars.