Petras Jonaitis Mantigirdaitis was a prominent Lithuanian noble. Grandson of Petras Mantigirdaitis, he first appeared in written sources in 1476 and reached his career high in the 1490s, when he was Voivode of Trakai (1490–97) and Grand Marshal of Lithuania (1491–97).
- Position held
- Voivode of Trakai, Starosta of Loutsk, Q26897619, Court Marshal
- Citizenship
- Grand Duchy of Lithuania
- Born
- 1440
- Died
- 1499, 1497
