Peter Anthony DeFazio (born May 27, 1947) is an American politician who served as the U.S. representative for Oregon's 4th congressional district from 1987 to 2023. He is a member of the Democratic Party and is a founder of the Congressional Progressive Caucus. A native of Massachusetts and a veteran of the United States Air Force Reserve, he previously served as a county commissioner in Lane County, Oregon. On December 1, 2021, DeFazio announced he would not seek reelection in 2022.