Cognomen Фен (Fen 
, Fenn 
, Фен 
) , across the world, is a common family name. The last name Фен is habitual in Malaysia, where it is a common surname, Reunion, where it is quite a common surname, and Brunei, where it is quite a rare surname. In absolute terms, it is the most numerous in Malaysia, the United States, and Indonesia. Also, Фен is the forename as well as the last name.