Family name Lothongkam (Lothongkam 
) , in the entire world, is a very rare surname. The surname Lothongkam is habitual in Denmark, where it is a rare surname, Austria, and Hungary, where it is a very rare surname. In absolute terms, it is the most numerous in Austria, Denmark, and Thailand.
| VARIANT | COUNTRY |
|---|---|
| Lothongkam | Austria, Hungary, Thailand, United States, Denmark |