Across the world, Sumulong (Sumulong 
) is a very rare boy's first name. The given name Sumulong is characteristic of South-eastern Asia, particularly Philippines, where it is a very rare male name. Much more frequently, Sumulong is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Sumulong | United Arab Emirates, Hong Kong, Canada, Philippines, United States |