Petros Voulgaris (Greek: Πέτρος Βούλγαρης, 13 September 1883 – 26 November 1957) was a Greek Admiral who served briefly as Prime Minister of Greece in 1945. He was famous for his role in suppressing the 1944 Greek naval mutiny and restoring the fleet to combat readiness, for which he was awarded the Commander's Cross of the Cross of Valour.