John Pfeiffer (born May 9, 1986) is an American politician who has served in the Oklahoma House of Representatives from the 38th district since 2014. He is Cherokee. He was re-elected by default in 2020. Pfeiffer authored a successful bill in 2023 that allowed for the removal of racial housing covenants from property titles.
He was one of twenty early Oklahoma lawmakers who endorsed Ron DeSantis for the 2024 presidential election.