Edmund Stephen Roper Piesse (5 January 1900 – 25 August 1952) was an Australian politician who represented Western Australia in the Senate from 1950 until his death. He was a member of the Country Party. Piesse was born in Katanning, Western Australia, the son of Arnold Edmund Piesse (a state MP). Three of his uncles (Frederick, Charles, and Alfred) and a first cousin (Harold) were also members of parliament in Western Australia.