Surname 科洪 (科洪 
, Colquhoun 
) , around the world, is quite a common last name. The last name 科洪 is characteristic of Jersey, where it is quite a common surname, Jamaica, and Australia, where it is quite a rare surname. In absolute terms, it is the most numerous in the United Kingdom, Australia, and the United States. Much less frequently, 科洪 is the forename as well as the last name.