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William John Ferguson (14 November 1891 – 29 January 1961) was an Australian politician. He was a member of the New South Wales Legislative Council for 16 days in 1953 and a member of the New South Wales Legislative Assembly from 1953 until his death. He was a member of the Australian Labor Party (ALP). Ferguson was born in Redfern and was the son of a clothes presser. He was educated to elementary level in Campsie and trained as a letter-setter and printer.