Imperial College School of Medicine (ICSM) is the undergraduate medical school of Imperial College London in England, and one of the United Hospitals. It is part of the college's Faculty of Medicine, and was formed by the merger of several historic medical schools, with core campuses at South Kensington, St Mary's, Charing Cross, Hammersmith and Chelsea and Westminster. The school ranked 3rd in the world for medicine in the 2022 Times Higher Education World University Rankings.