The Hawaii Republican Party is the affiliate of the Republican Party (GOP) in Hawaii, headquartered in Honolulu. The party was strong during Hawaii's territorial days, but following the Hawaii Democratic Revolution of 1954 the Democratic Party came to dominate Hawaii. The party currently has little power and is the weakest state affiliate of the national Republican Party; it controls none of Hawaii's statewide or federal elected offices and has the least presence in the state legislature of any state Republican party.

The Territory of Hawaii or Hawaii Territory was an organized incorporated territory of the United States that existed from April 30, 1900, until August 21, 1959, when most of its territory, excluding Palmyra Island, was admitted to the United States as the 50th U.S. state, the State of Hawaii. The Hawaii Admission Act specified that the State of Hawaii would not include Palmyra Island, the Midway Islands, Kingman Reef, and Johnston Atoll, which includes Johnston Island and Sand Island.