Last name ส่อ (So 
, ส่อ) , around the globe, is a widespread surname. The cognomen ส่อ is habitual in 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). Not in comparison with a country's population, this name is the most popular in Hong Kong, Egypt, and China. Also, ส่อ is the forename as well as the last name.