Last name 科杰 (科杰 
, Kejie 
, Cogger 
) , all over the world, is quite a rare surname. The family name 科杰 is characteristic of Andorra, where it is quite a rare surname, Australia, where it is a rare surname, and the United Kingdom. Measured by absolute frequency, it is commonest in China, the United Kingdom, and the United States. More frequently, 科杰 is the forename as well as the last name.