Surname Ratchanikan (Ratchanikan 
) , all around the world, is an extremely rare family name. Much more prevalently, Ratchanikan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ratchanikan | Trinidad and Tobago, Thailand |
Buanak, Juthong, Nammuang, and Srimueangklang