Surname Muthumalai (Muthumalai 
) , worldwide, is a very rare cognomen. The family name Muthumalai is habitual in Singapore, where it is a rare surname, Malaysia, where it is a very rare surname, and the United Kingdom, where it is an extremely rare surname. Measured by absolute frequency, the name is most common in India, Singapore, and Malaysia. Likewise, Muthumalai is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Muthumalai | Singapore, United Kingdom, United States, India, Malaysia |