Last name Куо (Kuo 
, Куо 
) , worldwide, is a common surname. The last name Куо is characteristic of Taiwan, where it is a common surname, Cayman Islands, where it is quite a common surname, and Bermuda (explore the name in all countries). Measured by absolute frequency, it is the most numerous in Taiwan, the United States, and China. Much less frequently, Куо is the forename as well as the last name.