Family name Jenyongsak (Jenyongsak 
) , in the world, is a very rare last name. The cognomen Jenyongsak is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname, and Malaysia, where it is an extremely rare surname. Much less frequently, Jenyongsak is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Jenyongsak | Malaysia, Thailand |