Surname Murugaratnam (Murugaratnam 
) , around the world, is a very rare last name. The family name Murugaratnam is characteristic of Malaysia, where it is a very rare surname, and India, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Murugaratnam | Malaysia, India |
Others, Krishna, Thuvakaran, and Lingeshwaran