Mark Francis McArdle (born 21 December 1956) is an Australian politician and former Deputy Leader of the Opposition in Queensland.
He has been a Member of the Legislative Assembly of Queensland since 2004, representing the electorate of Caloundra on the Sunshine Coast.
Initially a Liberal Party member, in 2007 he became the party leader and the following year oversaw a merger with the National Party that produced the Liberal National Party.
McArdle has held many parliamentary party positions, including stints as a Shadow Minister for Justice, State Development & Innovation; Emergency Services; Seniors; and Local Government.
He has also served the Shadow Attorney General and the Parliamentary Liberal Party Whip.