Shan S. Tsutsui is an American politician who was the 13th lieutenant governor of Hawaii from 2012 to 2018. A member of the Democratic Party, he was previously a member of the Hawaii Senate from 2003 to 2012, and he served as President of the Senate from 2010 to 2012. On January 29, 2018, Tsutsui announced his resignation, which was put into effect on January 31.

The lieutenant governor of Hawaii is the assistant chief executive of the U.S. state of Hawaii and its various agencies and departments, as provided in the Article V, Sections 2 though 6 of the Constitution of Hawaii. Elected by popular suffrage of residents of the state on the same ticket as the governor of Hawaii, the officeholder is concurrently the secretary of State of Hawaii.