Desmond Joseph O'Malley (born 2 February 1939) is an Irish former politician.
Once prominent as a Fianna Fáil Teachta Dála (TD) and government minister in the 1970s and 1980s, he went on to found the Progressive Democrats and serve as the party's first leader from 1985 until 1993.
He retired from politics at the 2002 general election.