Cognomen จม (Sankary 
, จม , Sinkha 
) , in the world, is quite a rare last name. The cognomen จม is characteristic of Gambia, where it is quite a rare surname, Lebanon, and Syria. Measured by absolute frequency, this name is the most popular in Syria, Lebanon, and Thailand. Likewise, จม is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sankary | Gambia, Thailand, India, Syria, Lebanon |
| จม | Thailand |
| Sinkha | Myanmar, South Africa, Thailand, India, Serbia |
| Sinkang | Thailand, Spain |
Chom, Drowroung, Dured, Sank, Sankamping, Sankid, Sanklong, Sankonked, Sankoth, Sannk, Sink, Sinkam, Sinkamolsret, Sinkaseam, Sinkate, Sinke, Sinken, Sinker, Sinkheao, Sinkhroh, Sinkhum, Sinkiradit, Sinkirdsuk, Sinkummoon, Sinkumned, Sinkumnoed, Sumpant, Sumpud, Sunaken, Sunghor, Sungked, Sunhok, Sunk, Sunke, Sunket, Sunkhao, Sunkhum, Sunklang, Sunklin, Sunkpan, and Sunksook