WGA may refer to:
In arts and entertainment: Web Gallery of Art Writers Guild of Alberta Writers Guild of America, an American union Writers Guild of America, East Writers Guild of America West
Other uses: Wagga Wagga Airport (IATA code) RAAF Base Wagga (IATA code) Western Golf Association Western Governors Association, a group of American governors in western states and territories Western Growers Association, an association representing farmers in the states of California and Arizona Wheat Germ Agglutinin, a protein that protects wheat from insects, yeast and bacteria Windows Genuine Advantage Western Global Airlines Whole genome association study Whole of Government Accounts, accruals based accounts covering the whole of the UK public sector World Goldpanning Association Wycliffe Global Alliance Phoenix-Mesa Gateway Airport, formerly Williams Gateway Airport