Hydaburg ( HYDE-ə-burg) is a first-class city in the Prince of Wales-Hyder Census Area, in the U.S. state of Alaska. The population was 382 at the 2000 census and 376 as of the 2010 census. The name "Hydaburg" refers to the Haida people.
Hydaburg is located at 55°12′17″N 132°49′15″W (55.204699, -132.820859). It is the southernmost city on Prince of Wales Island. Hydaburg is located on the north shore of Sukkwan Strait, which connects to Cordova Bay through Hetta Inlet. It has the only port facility and public road access on Cordova Bay.
According to the United States Census Bureau, the city has a total area of 0.3 square miles (0.78 km2), all land.
Hydaburg was formed in 1911 by consolidation of the three Haida villages on Cordova Bay. These villages were Howkan on the west coast of Long Island, Sukkwan at the northern end of Sukkwan Island, across Sukkwan Strait from Hydaburg, and Klinkwan on Prince of Wales Island at the mouth of Hunter Bay. The location was chosen because it had a reliable water supply.