| Blasius Mataranga Vlash Matrënga | |
|---|---|
| Sevastokrator Lord of Karavasta | |
 Coat of Arms of the Mataranga family | |
| Lord of Karavasta | |
| Reign | 1358–1367 |
| Successor | Gjon Mataranga |
| Born | 14th century |
| Died | 1367 |
| Spouse | Unknown |
| Issue | Gjon Mataranga |
| House | Mataranga |
| Father | Unknown |
| Mother | Unknown |
Blasius Mataranga (Albanian: Vlash Matrënga; 13?? – 1367), also known as Blasius II, Blaz, Vlasius or Vlaxius was an Albanian nobleman and member of the Mataranga family.[a] He played a key role in the regional politics of Albania during the mid-14th century. Blasius ruled over a principality from 1358 to 1367, with control over the coastal region between Durrës and Vlorë, including the strategic port of Karavasta. He held the title of sevastokrator and was recognized by Simeon Uroš, asserting semi-autonomous rule after the death of Stefan Dušan. His principality, though short-lived, prospered as a trade center, particularly for grain. Blasius was involved in conflicts with neighboring noble families, such as the Thopia and Balsha families, and maintained diplomatic relations with the Republic of Ragusa, focusing on trade agreements. After his death in 1367, his lands were disputed and eventually absorbed by other families, marking the decline of the Mataranga family’s influence. His son, Gjon Mataranga, inherited part of his estate, but the Mataranga family soon disappeared from historical records.