Last name 西奥 (Theo 
, Théo 
, 西奥 
) , in all the world, is a common family name. The surname 西奥 is habitual in Cyprus, where it is quite a common surname, Namibia, and Botswana, where it is quite a rare surname. Not in comparison with a country's population, the name is most common in Indonesia, France, and Cameroon. More prevalently, 西奥 is the forename as well as the last name.