Alta or ALTA may refer to:

• American Land Title Association, a national trade association representing the land title industry
• American Literary Translators Association, an association of literary translators in the United States
• Atlanta Lawn Tennis Association
• Australasian Language Technology Association

Älta is a locality situated in Nacka Municipality, Stockholm County, Sweden with 9,989 inhabitants in 2010.

Alta (; ; ) is the most populated municipality in Finnmark county, Norway. The administrative centre of the municipality is the town of Alta. Some of the main villages in the municipality include Kåfjord, Komagfjord, Kvenvik, Langfjordbotn, Leirbotn, Rafsbotn, Talvik, and Tverrelvdalen.