Peter Joseph Aloysius Coyne (6 July 1917 – 4 November 2001) was an Australian politician who was a Liberal Party member of the Legislative Assembly of Western Australia from 1971 to 1986, representing the seat of Murchison-Eyre.

Coyne was born in Geraldton, a port city in Western Australia's Mid West region, but his family moved to Yalgoo soon after his birth. After leaving school, he worked as a miner and metallurgist, and then at Agnew as a storekeeper. Coyne enlisted in the Royal Australian Air Force in 1941, and during the war served as a radio technician, eventually reaching the rank of flight sergeant. After the war's end, he returned to Agnew for a period, and then went to live in Perth, where he also worked as a storekeeper, television salesman, and life insurance salesman.^[1] Coyne entered parliament at the 1971 state election, succeeding the retiring Richard Burt as the member for Murchison-Eyre.^[2] He retired at the 1986 election, having served as deputy chairman of committees from 1980 to 1981, and died in Perth in 2001, aged 84.^[1]