Cognomen Osterly (Osterly 
) , all over the world, is an extremely rare surname. The surname Osterly is habitual in Honduras, where it is a very rare surname, and the United States, where it is an extremely rare surname. More frequently, Osterly is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Osterly | India, United States, Honduras |