Joshua Booth Green is an American politician and physician who has been the governor of Hawaii since 2022. A member of the Democratic Party, he is the state's ninth governor. He was the 15th lieutenant governor of Hawaii from 2018 to 2022, a member of the Hawaii Senate from 2008 to 2018, and as a member of the Hawaii House of Representatives from 2004 to 2008.

The governor of Hawaii is the head of government of the U.S. state of Hawaii and its various agencies and departments, as provided in the Hawaii State Constitution Article V, Sections 1 through 6. It is a directly elected position, votes being cast by popular suffrage of residents of the state.