Surname เพชรเกษม (เพชรเกษม 
, Katkasem , Phetraksa 
) , across the world, is a rare last name. The surname เพชรเกษม is habitual in Thailand, where it is a rare surname, and Finland, where it is a very rare surname. Very seldom, เพชรเกษม is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Katkasem, Phangkasem, เพชรเกษม | Thailand |
| Phetraksa | Finland, Thailand |
Chekasem, Detkasem, Khaemkasem, Mitkasem, Ophatkasem, Pakkasem, Pamkasem, Patkasem, Pawkasem, Pechkasem, Pechketporn, Pemkasem, Pengkasem, Petchkasem, Pethorn, Petkaemka, Petkanpum, Petkasaem, Petkasem, Petketkorn, Petkhasem, Petkhem, Petkhemmarat, Phaengklom, Phaetchakeng, Phaetchakreng, Phakasem, Phakkasem, Phetchaluk, Phetcharawee, Phetcharawet, Phetchare, Phetchemras, Phetchgeat, Phetchumrat, Phetchumsaeng, Phetkaed, Phetkaek, Phetkaem, Phetkaema, Phetkasem, Phetkasrm, Phetkedporn, Phetkhaimuk, Phetkhasem, Phetkhema, Phetprao, Phetrawan, Phetrkaeonu, Phetrket, Phetrkhiao, Phetrkhlai, Phetrkhruea, Phetrkhwamru, Phetrklom, Phetsemuen, Phetsuksaeng, Phetsuksng, Phokasem, Pikkasem, Pratkasem, and Thakasem