John Smart (disambiguation)

John Smart (1740–1811) was an English painter of portrait miniatures.

John Smart may also refer to:


 * John Smart (landscape artist) (1838–1899), Scottish painter
 * John Elliott Smart (1916–2008), officer in the Royal Navy
 * John Smart (skier) (born 1965), Canadian freestyle skier
 * John Karefa-Smart (1915–2010), politician from Sierra Leone