Condon Bryan Byrne (25 May 1910 – 25 November 1993), Australian politician, was a Senator for the Australian Labor Party and later the Democratic Labor Party. Prior to entering politics he was private secretary to Vince Gair who was then Premier of Queensland. Initially elected to the Senate for the ALP in 1951, he joined much of the Queensland ALP who split with the party to form the Queensland Labor Party (QLP – later to merge with the Democratic Labor Party DLP) in 1957. He was a barrister by profession. He never married.