Peter I of Courtenay (September 1126 – 10 April 1183) was the youngest son of Louis VI of France and his second queen consort, Adélaide de Maurienne. He was the father of the Latin Emperor Peter II of Courtenay.
Peter was born in France and died in Palestine. He married Elizabeth de Courtenay (1127 – September 1205), the daughter of Renauld de Courtenay and Helvis du Donjon. He is buried in a tomb in the floor of Exeter Cathedral, and not next to Elizabeth. The couple had ten children: