John Estell was a politician and coal miner in New South Wales, Australia. He was a member of the New South Wales Parliament for 29 years, including 20 years in the Legislative Assembly. He was a minister in the Holman, Storey and Dooley Labor governments.

John Marcus Baddeley was an Australian politician and member of the New South Wales Legislative Assembly from 25 March 1922 to 8 September 1949.