Surname Ketilson (Ketilson 
) , worldwide, is a very rare family name. The last name Ketilson is habitual in Northern America, particularly Canada, where it is a very rare surname, and the United States, where it is an extremely rare surname. Much less frequently, Ketilson is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ketilson | United States, India, Canada |