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.
Piesse attended Guildford Grammar School in Perth, before returning to Katanning as a farmer and grazier.
He was also a company director.
In 1949 he was elected to the Senate.
He held the seat until his death by his own hand in 1952.
He gassed himself in his car, at a rifle range near his home of Katanning.