Cognomen Petchiappan (Petchiappan 
) , globally, is a very rare surname. The last name Petchiappan is characteristic of India, where it is an extremely rare surname, and the United States. Very seldom, Petchiappan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Petchiappan | United States, India |
| anushya petchiappan researcher |
|
|
| velammal petchiappan researcher (ORCID 0000-0002-0339-2578) |
|