List of Famous people born in Wisconsin, United States of America

James J. Schmitt is an American politician and businessman from Wisconsin. A Republican, Schmitt served as the mayor of Green Bay, Wisconsin, from 2003 to 2019, becoming the city's longest-serving mayor.

John Warvelle Harbaugh (1926-2019) was an American geologist who spent most of his professional career at Stanford University devoted to research on mathematical modeling of dynamic systems, sedimentary basin simulation and oil exploration risk analysis. Since 1999, he is Professor Emeritus both at the Geological and Environmental Sciences Department and at the Energy Resources Engineering Department.
He received numerous honors and awards for his accomplishments and service to the profession that include the Haworth Distinguished Alumni Award of University of Kansas (1968), the A.I. Levorsen Award (1970) from the Pacific Section of the American Association of Petroleum Geologists (AAPG), the Distinguished Service Award also from AAPG (1987), the William Christian Krumbein Medal from International Association for Mathematical Geosciences (1986), and the Distinguished Alumni Award from the University of Wisconsin–Madison (2003). In 2001, his colleagues and friends presented him with a festschrift. In 2013, the International Association for Mathematical Geosciences elected him as Honorary Member.

Charles Alan "Charlie" Siebert is an American actor and television director. As an actor, he is probably best known for his role as Dr. Stanley Riverside II on the television series Trapper John, M.D. which he portrayed from 1979 to 1986. Although he still occasionally works as an actor, after 1986 Siebert's career has focused on working as a director for episodic television for such shows as Xena: Warrior Princess, and Hercules: The Legendary Journeys.

Herbert Spencer Gasser was an American physiologist, and recipient of the Nobel Prize for Physiology or Medicine in 1944 for his work with action potentials in nerve fibers while on the faculty of Washington University in St. Louis, awarded jointly with Joseph Erlanger.

Kathy Kinney is an American actress, voice actress, and comedian. She gained considerable popularity in the late 1990s for playing Mimi Bobeck, the outrageously made-up, flamboyantly vulgar, and vindictive nemesis of Drew Carey on the sitcom The Drew Carey Show. She had been involved in television, feature film, and stage work for years.

Helen Parkhurst was an American educator, author, lecturer, the originator of the Dalton Plan, founder of The Dalton School and host of "Child's World with Helen Parkhurst" on ABC Television Network. Parkhurst took her cues from developmental psychologist Jean Piaget and education reformers such as John Dewey and Horace Mann, producing a progressive education philosophy emphasizing the development of the “whole child."

David Koepp is an American screenwriter and film director. Koepp is the ninth most successful screenwriter of all time in terms of U.S. box office receipts with a total gross of over $2.3 billion.

Mark Joseph Seitz is an American prelate of the Roman Catholic Church. He has been the bishop of the El Paso since July 9, 2013. He was Auxiliary Bishop of Dallas from 2010 to 2013.

Thomas Edward Nissalke was an American professional basketball coach in the National Basketball Association and American Basketball Association. He coached several teams in both leagues, and had an overall coaching record of 371–508.