William Byron Lee is an American businessman and politician who has served since 2019 as the 50th governor of Tennessee. A member of the Republican Party, Lee was president and chief executive officer (CEO) of the Lee Company, a business operated by his family, from 1992 to 2016.

The governor of Tennessee is the head of government of the U.S. state of Tennessee and the commander-in-chief of the state's military forces. The governor is the only official in the Tennessee state government who is directly elected by the voters of the entire state.