Cognomen Surain (Surain 
) , all over the world, is a rare last name. The surname Surain is characteristic of Sri Lanka, where it is a rare surname, Philippines, and Belgium. Not in comparison with a country's population, it is commonest in India, Philippines, and Sri Lanka. Also, Surain is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Surain | Philippines, France, India, Sri Lanka, Malaysia |