William Senior (politician)

William Senior (9 February 1850 – 22 November 1926) was an English-born Australian politician, senator in the Parliament of Australia.

Born in Yorkshire, Senior migrated to Australia as a child and was educated at state schools in Mount Gambier, South Australia. He became a shopkeeper and Methodist minister. In 1904, he was elected to the South Australian House of Assembly as the Labor member for Victoria and Albert, holding the seat until 1912. In 1913, he was elected to the Australian Senate as a Labor Senator for South Australia. He left the Labor Party in the wake of the 1916 split over conscription, joining the Nationalist Party. Defeated in 1922, Senior died in 1926.