Plancia Magna (Greek: Πλανκία Μαγνά) was a prominent woman of Perga in the Roman province of Lycia et Pamphylia who lived in the 1st and 2nd centuries. During her life she was not only a high priestess, but a decurion and preeminent benefactress to the city, funding the restoration of the main city gates between the years AD 119 and 122.