Family name Muthalagu (Muthalagu 
) , around the globe, is a rare last name. The cognomen Muthalagu is characteristic of Malaysia, where it is a rare surname, Singapore, and India, where it is an extremely rare surname. Also, Muthalagu is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Muthalagu | China, Malaysia, Singapore, United States, India |