Cognomen Pachaiyappan (Pachaiyappan 
) , around the world, is a rare family name. The surname Pachaiyappan is habitual in Malaysia, where it is a very rare surname, India, and the United States, where it is an extremely rare surname. Likewise, Pachaiyappan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Pachaiyappan | United States, India, Malaysia, South Africa |