Family name Sadaiyappan (Sadaiyappan 
) , all around the world, is a very rare surname. The family name Sadaiyappan is habitual in Malaysia, where it is a very rare surname, India, where it is an extremely rare surname, and the United States. Also, Sadaiyappan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sadaiyappan | Malaysia, United States, India |