Last name เช็ม (Chem 
, เช็ม 
) , around the globe, is quite a common cognomen. The cognomen เช็ม is characteristic of Algeria, where it is quite a rare surname, Tunisia, and Malaysia. Measured by absolute frequency, it is the most numerous in Algeria, Indonesia, and Tunisia. Also, เช็ม is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Chem | Egypt, Tunisia, India, Indonesia, Algeria |
| เช็ม | Thailand |