Michael P. McAuliffe (born December 7, 1963) is a former Republican member of the Illinois House of Representatives, representing the 20th district in northwestern Chicago. He was first appointed in 1997, following the death of his father, Roger McAuliffe; between them, the McAuliffes represented northwestern Chicago for 46 years. On June 17, 2019, McAuliffe resigned from the Illinois House of Representatives. He was the only Republican to represent a significant portion of Chicago in the Illinois General Assembly. On June 29, 2019, Republican Bradley Stephens, the Mayor of Rosemont, was appointed to succeed McAuliffe.