McGrain is a surname. Notable people with the surname include: Danny McGrain (born 1950), Scottish international footballer Danny McGrain (footballer, born 1953) (1953–2004), Scottish footballer Myrtle McGrain (1883-1980), American actress Tommy McGrain (born 1959), Scottish footballer See also McGrain v. Daugherty, a United States Supreme Court case Kintner-McGrain House, a historic building in Corydon, Indiana