Ralph Desmond Clarke is an Australian former politician. He was a Labor Party member of the South Australian House of Assembly between 1993 and 2002, representing the electorate of Ross Smith. He was the deputy leader of the State Parliamentary Labor Party, and thus the deputy opposition leader, until he was deposed in factional infighting.
- Occupation
- politician, trade unionist
- Position held
- Member of the South Australian House of Assembly
- Citizenship
- Australia
- Born
- October 4, 1951
