Tomasina Morosini | |
|---|---|
| Duchess of Slavonia | |
 16th-century portrait of Tomasina Morosini | |
| Born | c. 1250 Venice |
| Died | 1296 or 1297 (aged c. 47) Hungary |
| Noble family | Morosini |
| Spouse(s) | Stephen the Posthumous |
| Issue | Andrew III of Hungary |
| Father | Michele Morosini |
| Mother | Agnese Cornaro |
Tomasina Morosini (also Tommasina or Thomasina; c. 1250 – 1296 or 1297) was a 13th-century Venetian noblewoman and member of the powerful Morosini family. She was the mother of Andrew III, the last king of Hungary from the Árpád dynasty. After his son's accession to the throne, she moved to Hungary in 1292, where she served as Duchess of Slavonia until her death.