Cognomen Jefa (Jefa 
) , around the globe, is a rare last name. The surname Jefa is habitual in Kenya, where it is a rare surname, Indonesia, where it is a very rare surname, and Nigeria, where it is an extremely rare surname. Measured by absolute frequency, this name is the most popular in Kenya, Indonesia, and India. Likewise, Jefa is the forename as well as the last name.