| Theodore II Palaiologos | |
|---|---|
 Theodore as a youth c. 1405 | |
| Despot of the Morea | |
| Reign | 1407–1443 then despot in Selymbria (1443–48) |
| Predecessor | Theodore I Palaiologos |
| Successor | Constantine Palaiologos and Thomas Palaiologos |
| Co-regent | Constantine Palaiologos (1428–1443) Thomas Palaiologos (1428–1443) |
| Born | c. 1396 |
| Died | 21 June 1448 (aged c. 52) Selymbria (modern-day Silivri, İstanbul, Turkey) |
| Spouse | Cleofa Malatesta |
| Issue | Helena, Queen of Cyprus and Armenia |
| Dynasty | Palaiologos |
| Father | Manuel II Palaiologos |
| Mother | Helena Dragaš |
| Religion | Greek Orthodox |
Theodore II Palaiologos or Palaeologus (Greek: Θεόδωρος Β΄ Παλαιολόγος, Theodōros II Palaiologos) (c. 1396 – 21 June 1448) was Despot in the Morea from 1407 to 1443 and in Selymbria from then until his death.