Frank Francis Fasi was an American politician who was the longest-serving Mayor of Honolulu, Hawaii, serving for 22 years. He also served as a territorial senator and member of the Honolulu City Council. To date, he remains the last Republican Mayor of Honolulu.

The mayor of Honolulu is the chief executive officer of the City and County of Honolulu. An office established in 1900 and modified in 1907, the mayor of Honolulu is elected by universal suffrage of residents of Honolulu to no more than two four-year terms. The City and County of Honolulu's elected officials include the mayor, the prosecuting attorney, and councilmembers representing nine districts.