Last name Jennan (Jennan 
) , around the world, is a rare cognomen. The surname Jennan is habitual in Morocco, where it is a rare surname, Italy, where it is a very rare surname, and Venezuela, where it is an extremely rare surname. Measured by absolute frequency, the name is most common in Morocco, Italy, and China. Much less frequently, Jennan is the forename as well as the last name.