Balthazar of Brunswick-Grubenhagen

Balthazar of Brunswick-Grubenhagen (c. 1336 – 1384 or 1385) was a son of Duke Henry II and his second wife Helvis of Ibelin. Following his brothers to the Latin East, he went to the Morea and briefly bore the title Despot of Romania, tied to Angevin claims in Albania and southern Greece.

He married Giacobella Caetani of the Caetani barons of Fondi, in the Kingdom of Naples. He died after 14 January 1384.