Wyndham Truran Cook (born 20 March 1943) is a former Australian politician who was a Labor Party member of the Legislative Assembly of Western Australia from 1970 to 1974, representing the seat of Albany.

Cook was born in Yarloop, a small town in Western Australia's South West region. After leaving school, he worked variously as an engineman (with Western Australian Government Railways), a shop assistant, and a butcher.^[1] A trade union official and a member of the Labor Party since 1962, Cook was elected to parliament at the 1970 Albany by-election, which had been caused by the resignation of Jack Hall, the sitting Labor member. Hall had been suffering from ill health and died before the by-election was held. Aged only 27 when elected, Cook retained Albany at the 1971 state election, but was defeated by the Liberal Party's Leon Watt at the 1974 election.^[2] After leaving parliament, he operated a tour company in the Mid West. He later lived in Queensland, eventually retiring to Renmark, South Australia.^[1]