The lieutenant governor of Wisconsin is the first person in the line of succession of Wisconsin's executive branch, thus serving as governor in the event of the death, resignation, removal, impeachment, absence from the state, or incapacity due to illness of the governor of Wisconsin. Forty-one individuals have held the office of lieutenant governor since Wisconsin's admission to the Union in 1848, two of whom—Warren Knowles and Jack Olson—have served for non-consecutive terms. The first lieutenant governor was John Holmes, who took office on June 7, 1848. The current lieutenant governor is Mandela Barnes, who took office on January 7, 2019. In 2022, Barnes unsuccessfully sought election to the United States Senate; in November Sara Rodriguez was elected to take his place.
