Surname Anacletus (Anacletus 
, Клет 
) , all over the world, is a rare family name. The cognomen Anacletus is habitual in Kazakhstan, where it is a rare surname, Tanzania, and Russia, where it is a very rare surname. Measured by absolute frequency, this name is the most popular in Russia, Nigeria, and Tanzania. Also, Anacletus is the forename as well as the last name.