Surname Ladum (Ladum 
) , all over the world, is a very rare family name. The last name Ladum is habitual in Denmark, where it is a very rare surname, Thailand, and Malaysia. Measured by absolute frequency, it is the most numerous in Thailand, the United States, and India. More frequently, Ladum is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ladum | Denmark, Thailand, United States, India, Malaysia |