Inspired by the Constitutional Convention of Australia in the 1890s and first convened in November 2019 by industry leaders from New Zealand (NZ), the Tasman Sea Advisory Board is an international committee that seeks to strengthen the relationship between the islands of the Tasman Sea.

The Tasman Sea Advisory Board (TSAB) acknowledges the Indigenous (Aboriginal) communities, and their traditional rights, throughout the islands of the Tasman Sea. The TSAB enjoys its ceremonial headquarters in the island of Norfolk.