Surname Jaep (Jäp 
, Jaep 
) , across the world, is a rare cognomen. The surname Jaep is characteristic of Luxembourg, where it is quite a rare surname, Germany, where it is a rare surname, and Portugal, where it is a very rare surname. In absolute terms, this name is the most popular in Germany, the United States, and the United Kingdom. Also, Jaep is the forename as well as the last name.