WJA

WJA or wja may refer to:


 * Welsh Judo Association, the governing body for the sport of judo in Wales
 * WJA, the ICAO code for WestJet, Alberta, Canada
 * WJA, the IATA code for Woja Airport, Ailinglaplap Atoll, Marshall Islands
 * wja, the ISO 639-3 code for Waja language, eastern Nigeria