Theodore I, Marquis of Montferrat | |
|---|---|
| Marquis of Montferrat | |
| Reign | 1306–1338 |
| Predecessor | John I Aleramici |
| Successor | John II Palaiologos |
| Born | c. 1290 Constantinople (modern-day Istanbul, Turkey) |
| Died | 24 April 1338 Trino, Italy |
| Noble family | Palaeologus-Montferrat |
| Spouse(s) | Argentina Spinola |
| Issue | John II, Marquis of Montferrat Yolande Palaeologina of Montferrat |
| Father | Andronikos II Palaiologos |
| Mother | Irene of Montferrat |
Theodore I Palaiologos or Palaeologus (Greek: Θεόδωρος Παλαιολόγος, full name: Theodoros Komnenos Doukas Angelos Palaiologos) (c. 1290 – 24 April 1338) was Marquis of Montferrat from 1306 until his death.