Last name Jankan (Jankan 
) , around the world, is a very rare cognomen. The cognomen Jankan is characteristic of Bahrain, where it is a rare surname, Thailand, where it is a very rare surname, and the United Kingdom, where it is an extremely rare surname. Measured by absolute frequency, it is commonest in Thailand, Bahrain, and India. Also, Jankan is the forename as well as the last name.