Prince Feodor Ostrogski (1360–1446) was a magnate in Volhynia of Rurikid stock, son of Danylo Ostrozky. In some sources he is called Teodor, Fedko or Frederic. He was active in the Hussite Wars and assisted Sigismund Korybut.
- Occupation
- monk
- Position held
- Q26714760, Q66190052, Starosta of Loutsk, hetman
- Citizenship
- Grand Duchy of Lithuania
- Born
- 1360
- Died
- 1446
