Thomas George Anstruther Molloy (4 October 1852 – 16 February 1938) was an Australian politician.
He was a member of the Western Australian Legislative Assembly for the electorate of Perth from 1892 until 1894, and thereafter became a perennial candidate, unsuccessfully standing for parliament 14 times.
He also served two terms as the Mayor of Perth, from 1908 to 1909 and from 1911 to 1912.
Molloy also made a significant contribution to the cultural life of Perth, building numerous hotels and the first two theatres in the city, most notably His Majesty's Theatre, which is still open today.