1946 Sir Norman Paul (Sydney) and J. Beacham Kiddle (Melbourne) (Honorary Secretaries)
1947 Dr H.O. Selle (Sydney) and Colonel R.E.Fanning (Melbourne) (Honorary Secretaries)
1956 Dr S. Hatfield (Honorary Federal Secretary)
1958-1967 Dr Edgar Thompson (Honorary Federal Secretary)
1967-1974 Mr Royce H. Kronborg (Honorary Federal Secretary - Executive Vice President)
1974-1980 Mr Trevor Elligett (first salaried National Director)
1980-1987 Dr Errol Pickering (National Director)
1987-1989 Dr John Morris (National Director)
1989-1990 Mr Peter Read (National Director)
1991-1997 Mr Peter Baulderstone (National Director)
1997-1998 Prof Donald Hindle (National Director)
1998-2002 Mr Mark Cormack (National Director)
2002-2013 Ms Prue Power (Director/Chief Executive)
2013-2021 Ms Alison Verhoeven (Chief Executive)
2021-2021 Mr John Gregg (Chief Executive)
2021-Present Ms Kylie Woolcock (Chief Executive)