Cognomen Jankul (Жанкул 
, Jankul 
) , all around the world, is a very rare family name. The family name Jankul is habitual in Kyrgyzstan, where it is a very rare surname, New Zealand, and Canada. In absolute terms, it is commonest in Canada, Kyrgyzstan, and Thailand. More frequently, Jankul is the forename as well as the last name.