The City and Borough of Yakutat is a borough in the U.S. state of Alaska and the name of a former city within it. The name in Tlingit is Yaakwdáat. It derives from an Eyak name, diyaʼqudaʼt, and was influenced by the Tlingit word yaakw.
The borough covers an area about six times the size of the U.S. state of Rhode Island, making it one of the largest counties in the United States. As of the 2010 census, the population was 662, making it Alaska's least populous borough or census area, and the ninth-least populous county nationwide. The population had declined from 680 in 2000.
The Borough of Yakutat was incorporated as a non-unified Home Rule Borough on September 22, 1992. Yakutat was previously a city in the Skagway–Yakutat–Angoon Census Area.
The U.S. Census Bureau has defined the former City of Yakutat as a census-designated place within the borough. The only other significant population center in the borough is the community of Icy Bay, the site of the Icy Bay Airport, in the west-central part of the borough.