Family name ジェン (Jen 
, Jenn , Jeng ) , throughout the world, is a common last name. The last name ジェン is characteristic of Gambia, where it is a common surname, Malaysia, where it is quite a common surname, and Cayman Islands (explore the name in all countries). Measured by absolute frequency, it most frequently occurs in Malaysia, India, and Indonesia. More frequently, ジェン is the forename as well as the last name.