The Australian High Commission was established in 1974 with the appointed High Commissioner resident in Ottawa. 

In 1975, the High Commissioner was accredited with non-resident status for Barbados inheriting this function from the Canadian High Commissioner. This ceased in 1994 when the newly-appointed High Commissioner to Barbados took up residence in Bridgetown.

High Commissioners:

1972-1973       :  D W McNicol (resident in Ottowa, Canada)
1974            :  J C Ingram  (resident in Ottowa, Canada)
1975-1977       :  J H A Hoyle
1978-1979       :  B B Hickey
1980-1981       :  G N Bilney
1982-1984       :  R E Little
1985-1987       :  M A S Landale
1988-1989       :  D I Wille
1990-1994 (May) :  P W Rodgers
1994 (Jun) -    :  R C Whitty (resident in Bridgetown, Barbados)

Sources:

[1]  Information supplied by the Department of Foreign Affairs and 
     Trade

[2]  Commonwealth Government Directory, years 1972-1995
Historical agency address
1974-1975       : Royal bank of Canada Building, 6th Floor,
                  90 Sparks St, Ottowa KIP 584
1975-1994 (May) : 4th Floor, National Life Building, 64 Knutsford
                  Boulevard, Kingston
1994 (June) -   : Bishop's Court Hill, St Michael, Bridgetown