Justin Hilary O'Byrne, AO (1 June 1912 – 10 November 1993) was a long-serving Australian Labor Party politician who represented Tasmania in the Federal Senate from 1947 to 1981, acting as President of the Senate from 1974 to 1975.
Justin Hilary O'Byrne, AO (1 June 1912 – 10 November 1993) was a long-serving Australian Labor Party politician who represented Tasmania in the Federal Senate from 1947 to 1981, acting as President of the Senate from 1974 to 1975.