Cognomen Ryain (Ryain 
) , across the world, is a rare family name. The surname Ryain is characteristic of South-eastern Asia, particularly Myanmar, where it is a rare surname, Singapore, where it is a very rare surname, and Malaysia. In absolute terms, this name is the most popular in Myanmar, India, and Malaysia. Very seldom, Ryain is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ryain | Myanmar, Philippines, India, Malaysia, China |