Cognomen Ketchu (Ketchu 
) , in the entire world, is a rare family name. The last name Ketchu is habitual in Thailand, where it is a rare surname, the United States, where it is an extremely rare surname, and South Africa. Much less frequently, Ketchu is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ketchu | Thailand, India, Canada, United States, South Africa |
Ash, Kesorn, Robert, Donald, Judith, Travis, Michael, Kendra, Charles, Jeffrey, Thenadon, Kanchana, Warunyoo, Somruedee, Kitchapon, Dolores, Phrakru Sriwuddhisop, Andrew, Steven, Don, Mike, Ruth, Tony, Sarah, Shawn, Andrea, Susan, Chris, Karen, Krist, James, Nancy, Nidya, Steve, and Natthaporn