Lemieux

Lemieux may refer to:


 * Lemieux (surname)
 * Lemieux, Ontario, a ghost town in Ontario
 * Lemieux, Quebec, a municipality in Québec
 * Lemieux Island, in the middle of the Ottawa River, National Capital Region, Canada
 * Lemieux Library, Seattle University, Washington, U.S.
 * Lemieux–Johnson oxidation, a chemical reaction named after Raymond Lemieux and W. S. Johnson