King David Kalakaua Building

U.S. Post Office, Customhouse, and Courthouse
Building in 2019
Location335 Merchant Street, Honolulu, Hawaii
Coordinates21°18′22″N 157°51′38″W / 21.30611°N 157.86056°W / 21.30611; -157.86056
Area2.8 acres (1.1 ha)
Built1922
ArchitectYork & Sawyer
Architectural styleMission/Spanish Revival
NRHP reference No.75000620
Added to NRHPJanuary 27, 1975

The King David Kalakaua Building in Honolulu, Hawaii is a government building formerly known as the U.S. Post Office, Customhouse, and Courthouse. It was the official seat of administration in the Territory of Hawaii and state of Hawaii for the United States federal government.