Oddone Frangipane (also Oddo or Otto, Latin: Odo Frajapanis[1]) was a Roman lord and military leader in the service of the Papacy in the 12th century.
After the papal election of 7 September 1159, Oddone wrote to Louis VII of France exhorting him to support Alexander III.
When Alexander was arrested by supporters of the imperialist Antipope Victor IV, it was Oddone who freed him and sent to safety in Campania.
His son Leo was captured in battle with the emperor's troops in 1167 and he himself led the largest army of Roman citizens since the days of the Roman Empire into battle at Monte Porzio, where he was defeated by Christian I, Archbishop of Mainz.
[2] In the spring of 1170, Oddone remarried to a woman named Eudoxia, a Byzantine princess.