Banggai Sea Regency is a regency in the province of Central Sulawesi, Indonesia. The regency was established on 14 December 2012, partitioned from the Banggai Islands Regency. It comprises the southern part of the Banggai Islands archipelago, including the main island of Banggai itself, the islands of Labobo and Bangkurung to the southwest of Banggai Island, and the numerous small Bowokan Islands to the southeast; it does not include the larger island of Peleng to the north which substantially comprises the residual Banggai Islands Regency.