Reginald Charles O'Brien (23 January 1926 – 20 April 1999) was an Australian politician. Born in Newcastle, New South Wales, he was educated at technical schools in Sydney before military service. On his return, he was a public servant, and was an official of the Clerks' Union in Queensland. In 1961, he was elected to the Australian House of Representatives as the Labor member for Petrie, defeating Liberal minister Alan Hulme. He was defeated by Hulme in 1963. O'Brien died in 1999.
|Member of the Australian Parliament|
9 December 1961 – 30 November 1963
|Preceded by||Alan Hulme|
|Succeeded by||Alan Hulme|
|Born||23 January 1926|
Newcastle, New South Wales
|Died||20 April 1999 73)(aged|
|Political party||Australian Labor Party|
- Carr, Adam (2008). "Australian Election Archive". Psephos, Adam Carr's Election Archive. Retrieved 26 July 2008.
|Parliament of Australia|
| Member for Petrie
1961 – 1963