Ruby Florence Hutchison (15 February 1892 – 17 December 1974) was an Australian politician. She was a Labor Party member of the Western Australian Legislative Council from 1954 to 1971, representing Suburban Province (1954–1965) and North-East Metropolitan Province (1965–1971). She was the first woman to be elected to the Legislative Council, the fourth woman to be elected to the Parliament of Western Australia, and with her third marriage in 1966 to Frederick Lavery, the first woman in Australia to serve in parliament alongside her husband.