Cognomen 凯斯特 (Kester 
, Koester 
, 凯斯特 
) , all over the world, is a common surname. The last name 凯斯特 is characteristic of Germany, where it is quite a rare surname, Netherlands, and Malta. Not in comparison with a country's population, it is the most numerous in the United States, Germany, and Nigeria. Much less frequently, 凯斯特 is the forename as well as the last name.