| Honorific-Prefix: | The Honourable |
| Joe Riordan | |
| Honorific-Suffix: | AO |
| Office: | Minister for Housing and Construction |
| Primeminister: | Gough Whitlam |
| Term Start: | 6 June 1975 |
| Term End: | 11 November 1975 |
| Predecessor: | Les Johnson |
| Successor: | John Carrick |
| Constituency Mp2: | Phillip |
| Parliament2: | Australian |
| Predecessor2: | William Aston |
| Successor2: | Jack Birney |
| Term Start2: | 2 December 1972 |
| Term End2: | 13 December 1975 |
| Birth Date: | 27 February 1930 |
| Birth Place: | Sydney |
| Death Place: | Sydney |
| Nationality: | Australian |
| Spouse: | Patricia Watkins |
| Party: | Australian Labor Party |
| Relations: | 6 children = John Riordan, Peter Riordan, Michael Riordan, Bernie Riordan, Cathy Riordan and Maureen RiordanAnd 14 Grandchildren |
| Occupation: | Clerk |
Joseph Martin Riordan AO (27 February 193019 November 2012) was an Australian politician and briefly government minister.[1]
Riordan was born in Sydney, raised as a Catholic, and educated at Patrician Brothers School and Marist Brother College in that city. From 1958 to 1972 he was Federal Secretary of the Federated Clerks' Union (a stronghold of anti-Communist social democrats).[2] [3]
Riordan was elected as the Australian Labor Party member for the House of Representatives seat of Phillip at the 1972 election, defeating the Liberal, William Aston. He was Minister for Housing and Construction from June 1975 until the dismissal of the Whitlam Government in November 1975. He was defeated by the Liberals' Jack Birney at the 1975 election.[4]
Riordan was Senior Deputy President of the Australian Industrial Relations Commission from 1986 to 1995.[2] He was made an Officer of the Order of Australia (AO) in January 1995 for "service to industrial relations, to social justice and to the Community".[5]
He died on 19 November 2012, aged 82.[6]
He was the nephew of Darby Riordan, the Labor member of the House of Representatives for Kennedy from 1929 to 1936.[7]