Racine (/ˈreɪsiːn/ RAY-seen) or (/rəˈsiːn/ rə-SEEN) is a city in and the county seat of Racine County, Wisconsin, United States. It is located on the shore of Lake Michigan at the mouth of the Root River. Racine is located 22 miles south of Milwaukee. As of the 2013 U.S. census, the city had a population of 78,199, making it the fifth-largest city in Wisconsin. Its median home price of $103,625 makes it one of the most affordable cities in Wisconsin to buy a home.

Racine is the headquarters of a number of industries, including J. I. Case (heavy equipment), S. C. Johnson & Son (cleaning and chemical products), Dremel Corporation, Reliance Controls Corporation, Twin Disc, and Arthur B. Modine (Heat Exchangers). The Mitchell & Lewis Company, a wagonmaker in the 19th century, began making motorcycles and automobiles as Mitchell-Lewis Motor Company at the start of the 20th century. Racine was also home to InSinkErator, the first garbage disposal.Malted milk balls were developed in Racine. Architects of the city included A. Arthur Guilbert and Edmund Bailey Funston. It has several immigrant communities.