Cognomen Sumul (Sumul 
) , worldwide, is a very rare family name. The surname Sumul is habitual in Malaysia, where it is a very rare surname, Nigeria, where it is an extremely rare surname, and Philippines. In absolute terms, it is commonest in India, Malaysia, and Nigeria. More frequently, Sumul is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sumul | Philippines, India, Malaysia, United States, Nigeria |