John Clark Adamson (12 May 1910 – 8 March 1984) was an Australian politician. He was a member of the New South Wales Legislative Assembly for a single term from 1950 until 1953 . He was a member of the Liberal Party of Australia.Adamson was born in North Sydney New South Wales. He was the son of a solicitor and was educated at Parramatta High School and Sydney Teachers College.