Surname แสบ (Keen 
, Saep 
, แสบ ) , all over the world, is a common cognomen. The family name แสบ is characteristic of New Zealand, where it is quite a common surname, Malaysia, and Guernsey (explore the name in all countries). Not in comparison with a country's population, it is the most numerous in the United States, Malaysia, and the United Kingdom. Much less frequently, แสบ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Keen | Australia, United Kingdom, United States, India, Malaysia |
| Saep | Philippines, Thailand, India, Indonesia, Malaysia |
| แสบ | Thailand |