Globally, Rajannan (Rajannan 
) is a rare boy's given name. The forename Rajannan is habitual in Southern Asia, particularly India, where it is a very rare male name. Very seldom, Rajannan is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Rajannan | United Kingdom, China, India, Malaysia, United States |