The Australian Education Union (AEU) is an Australian trade union, founded in 1984 as the Australian Teachers Union,[2][3] which is registered with Fair Work Australia as an employee group, and is affiliated with the Australian Council of Trade Unions. The AEU is Australia's third largest trade union, with 183,910 registered members in 2018, consisting of educators who work in public schools, colleges, early childhood and vocational settings in all states and territories of Australia.[4] Members include teachers and allied educational staff, principals and administrators mainly in government school and TAFE systems.