Last name 加军 (Jiajun 
, 加军 ) , across the world, is quite a rare surname. The surname 加军 is habitual in Singapore, where it is quite a rare surname, Taiwan, where it is a rare surname, and Malaysia. Not in comparison with a country's population, this name is the most popular in China, Taiwan, and Malaysia. More prevalently, 加军 is the forename as well as the last name.