The City and Borough of Juneau is a unified municipality located on the Gastineau Channel on the Alexander Archipelago in the U.S. state of Alaska, and is the state capital. The municipality unified in 1970 when the City of Juneau merged with the City of Douglas and the surrounding borough to form the current home rule municipality.

The city, Alaska's second-largest in terms of population, is nestled at the base of Mount Juneau and across the channel from Douglas Island. As of the 2000 census, the City and Borough had a population of 30,711. The U.S. Census Bureau's 2004 population estimate for the City and Borough was 31,118.

Juneau was named after gold prospector Joe Juneau. The Tlingit name of the town is Dzántik'i Héeni "flounder creek", and Auke Bay just north of Juneau proper is called Aakh'w "little lake" in Tlingit. The Taku River just south of Juneau was named after the cold t'aakh wind that blows down from the mountains, and is the source of some of Juneau's more unpleasant weather.