Cognomen ซ่อ (So 
, ซ่อ) , around the world, is a widespread surname. The surname ซ่อ is characteristic of Hong Kong, where it is a widespread surname, British Virgin Islands, where it is a common surname, and Cayman Islands (explore the name in all countries). Measured by absolute frequency, it is the most numerous in Hong Kong, Egypt, and China. Likewise, ซ่อ is the forename as well as the last name.