Family name Irudhayaraj (Irudhayaraj 
) , throughout the world, is a rare last name. The last name Irudhayaraj is characteristic of Malaysia, where it is a very rare surname, India, where it is an extremely rare surname, and the United Kingdom. Not in comparison with a country's population, it most frequently occurs in India, Malaysia, and the United States. Likewise, Irudhayaraj is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Irudhayaraj | United Kingdom, United States, Malaysia, India, Singapore |