Surname Withlock (Withlock 
) , around the globe, is a very rare cognomen. The family name Withlock is characteristic of Indonesia, where it is a very rare surname, Thailand, where it is an extremely rare surname, and the United Kingdom. In absolute terms, the name is most common in Indonesia, Thailand, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Withlock | Canada, Thailand, United States, Indonesia, United Kingdom |