Surname 克罗伊 (Croy 
, 克罗伊) , throughout the world, is quite a rare last name. The cognomen 克罗伊 is characteristic of New Zealand, where it is quite a rare surname, the United States, and Austria, where it is a rare surname. Measured by absolute frequency, the name is most common in the United States, South Africa, and the United Kingdom. Much less frequently, 克罗伊 is the forename as well as the last name.