Cognomen Jengi (Gang 
, Jengi 
, Gäng 
) , all around the world, is a common last name. The surname Jengi is habitual in Cayman Islands, where it is quite a common surname, Mongolia, where it is quite a rare surname, and Malaysia. Measured by absolute frequency, it is the most numerous in China, India, and Indonesia. Likewise, Jengi is the forename as well as the last name.