Family name Дидим (Didimo 
, Didymus 
, Didim 
) , in the world, is a rare cognomen. The family name Дидим is habitual in Cameroon, where it is a rare surname, Georgia, and Venezuela. In absolute terms, the name is most common in Indonesia, Cameroon, and Brazil. More frequently, Дидим is the forename as well as the last name.