Reginald 'Rex' Colin Townley CMG was an Australian politician who served as leader of the Liberal Party in Tasmania from 1950 to 1956. He also played first-class cricket for the Tasmanian cricket team in his younger years, dismissing Donald Bradman in the 1935 season.

The Leader of the Opposition in Tasmania is the title of the leader of the largest minority party in the state lower house, the Tasmanian House of Assembly. They act as the public face of the opposition, leads the opposition on the floor of parliament. They thus act as a chief critic of the government and ultimately attempt to portray the opposition as a feasible alternate government. They are also given certain additional rights under parliamentary standing orders, such as extended time limits for speeches. Should the opposition win an election, the Leader of the Opposition will usually be nominated to become the Premier of Tasmania.