The lieutenant governor of Mississippi is the second-highest ranking elected executive officer in the U.S. state of Mississippi, below the governor of Mississippi, and is the only official in the state to be a member of two branches of state government. The office of lieutenant governor was established when Mississippi became a state in 1817, abolished for a few decades in the first half of the 19th century, and restored later in the century. The lieutenant governor serves a four-year term with a two consecutive term limit. The current lieutenant governor is Delbert Hosemann, a Republican, who has held the office since 2020.

The governor of Mississippi is the head of government of Mississippi and the commander-in-chief of the state's military forces. The governor has a duty to enforce state laws, and the power to either approve or veto bills passed by the Mississippi Legislature, to convene the legislature at any time, and, except in cases of treason or impeachment, to grant pardons and reprieves.