Major General Sir Newton James Moore, KCMG, VD (17 May 1870 – 28 October 1936) was an Australian politician, businessman and army officer.

He served as the eighth Premier of Western Australia from 1906 to 1910 and, following service in the First World War, was a member of the House of Commons of the United Kingdom from 1918 to 1932.

He was educated at Arthur Street Primary School in Bunbury before attending Prince Alfred College in Adelaide, South Australia.

Moore was also involved in the Western Australian militia, commencing a long career as a private with the BRV (Bunbury Rifle Volunteers) in 1894.

In August 1908, Moore was appointed commanding officer of the 5th Military District Intelligence Section, where he remained until March 1914.

His government laid the foundations of the Wheatbelt, and brought the state into line with the rest of Australia through an Income and Land tax, despite opposition from the conservative Legislative Council.

After a break from politics in 1923 and 1924, he won the seat of Richmond (Surrey) in the general election of 29 October 1924, and held it until his resignation on 13 April 1932.

He established himself as an excellent representative of Australia, and his opinion on Empire matters was highly valued by British ministers.

After retiring from politics, Moore became President of the British Empire Steel Corporation, a company with interests in Western Australia and Canada.