Michael James "Mike" Sheridan (born September 17, 1958) is an American consultant, substance abuse counselor, and former politician from Janesville, Wisconsin.

Prior to his legislative service, he worked at the General Motors Janesville Assembly plant and was president of the United Auto Workers Local 95 from 2002 through 2008.

"[8] In February 2010, Sheridan admitted dating a lobbyist for payday lenders at a time when the Wisconsin Legislature was debating regulating the industry.

[10] Although Republicans were assisted by a national wave in 2010, driven by the Tea Party movement and resistance to the Affordable Care Act, Sheridan's defeat in the Janesville-based 44th Assembly district was a significant upset.

Former Assembly Democratic leader James Kreuser wrote an open letter blasting Sheridan for his personal and professional missteps in the lead-up to the 2010 election.

Since 2021, he has also worked in drug abuse outreach for the University of Wisconsin School of Medicine and Public Health, and is now the state business development director for the Recovery Centers of America.

[17] On April 8, 2024, Sheridan announced he was considering a bid for Wisconsin's 1st Congressional district to challenge incumbent Bryan Steil in the 2024 United States House of Representatives elections, but withdrew once former congressman Peter Barca entered the race.