William Watson (22 October 1864 – 21 December 1938) was an Australian businessman and politician. He was an independent member of the Australian House of Representatives for the seat of Fremantle as an independent from 1922 to 1928 and 1931 to 1934. Watson was born in Campbells Creek, Victoria and was educated at Guildford State School. He left school at 13 and was variously a manual labourer, miner, navvy, bricklayer, plasterer, axeman, dairyman, farmer and commercial traveller before operating his own grocery shop in Melbourne from 1889 to 1895.