McHarg is a surname. Notable people with the surname include:
Alastair McHarg (born 1944), Scottish rugby union player Elizabeth McHarg (1923–1999), Scottish mathematician Ian McHarg (1920–2001), Scottish architect Marilyn McHarg, member of the Canadian section of Médecins Sans Frontières (MSF) Rodger McHarg (born 1947), New Zealand cricket umpire Scott McHarg (born 1974), Scottish football player Cameron McKenzie-McHarg (born 1980), Australian rower Garry Findlay McHarg (born 1969), Award winning Scottish photographer
Places McHarg, Michigan, an incorporated community
See also Mount McHarg, a mountain in western Canada McHargue (surname)