Denis Smith may refer to:

• Denis Smith (English cricketer) (1907–1979), played Test cricket for England
• Denis Smith (footballer, born 1947), English football player and manager
• Denis Smith (footballer, born 1932) (1932–2004), English football player
• Denis Smith (West Indian cricketer) (born 1991), West Indian cricketer from Grenada
• Denis Mack Smith (1920–2017), English historian