Surname Ketro (Ketro 
) , around the globe, is an extremely rare family name. The surname Ketro is habitual in Finland, where it is a very rare surname, and the United States, where it is an extremely rare surname. Much more frequently, Ketro is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ketro | India, Finland, United States, Democratic Republic of the Congo |