WGA

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