Cognomen Chengalvarayan (Chengalvarayan 
) , in the entire world, is a rare last name. The surname Chengalvarayan is habitual in Australia, where it is a very rare surname, India, where it is an extremely rare surname, and the United States. Likewise, Chengalvarayan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Chengalvarayan | India, United Kingdom, United States, Australia |
|
padmanaban chengalvarayan an Indian writer, researcher, creator of world record in research, IN |
|