The 1909 Tasmanian state election was held on Friday, 30 April 1909 in the Australian state of Tasmania to elect 30 members of the Tasmanian House of Assembly. This was the first general election in the British Empire to elect all members through a form of proportional representation, the single transferable vote.

Hare-Clark is a type of single transferable vote electoral system of proportional representation used for elections in Tasmania and the Australian Capital Territory. The method for the distribution of preferences is similar to other voting systems in Australia, such as for the Australian Senate.