Diane Smith may refer to: Diane Shader Smith, American writer, publicist, and cystic fibrosis advocate Diane Ellingson Smith (1959–2019), American gymnast, teacher, and speaker Diane Smith-Gander (born 1957), Australian business executive Di Smith, also credited as Diane Smith, Australian actress
See also Dianne Smith (born 1965), American abstract painter, sculptor, and installation artist