Surname Longkum (Longkum 
) , across the world, is a very rare family name. The last name Longkum is characteristic of Nigeria, where it is a very rare surname, Thailand, and India, where it is an extremely rare surname. Also, Longkum is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Longkum | Nigeria, India, Thailand |