Cognomen Oolin (Oolin 
) , globally, is a very rare surname. The last name Oolin is habitual in Myanmar, where it is a rare surname, China, where it is an extremely rare surname, and the United States. Also, Oolin is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Oolin | Myanmar, India, New Zealand, United States, China |