This is a list of members of the 18th Legislative Assembly of Queensland from 1909 to 1912, as elected at the 1909 state election held on 2 October 1909. On 7 February 1911, William Kidston, the Premier of Queensland and Liberal member for Rockhampton, resigned to become President of the Land Court. Labor candidate John Adamson won the resulting by-election on 25 February 1911. On 7 February 1911, Arthur Hawthorn, the Liberal member for Enoggera, resigned following his appointment to the Queensland Legislative Council. Liberal candidate Richard Trout won the resulting by-election on 25 February 1911. On 10 March 1911, Joshua Thomas Bell, the Liberal member for Dalby, died. At the resulting by-election on 2 April 1911, Liberal candidate William Vowles was elected. In July 1911, the member f