Sir Walter Jackson Cooper, MBE was an Australian politician who served as a Senator for Queensland for over 36 years. He served in the Senate from 1928 to 1932 and 1935 to 1968, representing the Country Party. He was also Minister for Repatriation in the Menzies government from 1949 to 1960.

The National Party of Australia, also known as The Nationals or The Nats, is a centre-right, agrarian political party in Australia. Traditionally representing graziers, farmers, and regional voters generally, it began as the Australian Country Party in 1920 at a federal level.