Around the world, สองพี่น้อง (สองพี่น้อง, Songak 
, Songphoklang 
) is an extremely rare unknown gender forename. Predominantly, สองพี่น้อง is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Songak | Nigeria |
| Songphoklhang, Songphoklang | Thailand |
Biinfrueang, Bunkheawbut, Bunkhlong, Seangaunphun, Songaaluek, Songaidee, Songamon, Songasiket, Songaubon, Songaukson, Songaumporn, Songaupakan, Songaupakarn, Songauppakan, Songaupsorn, Songbaen, Songbanpot, Songbanthoeng, Songbhob, Songbhudr, Songboonroud, Songbuaphun, Songbuatong, Songbunnak, Songchutong, Songdoan, Songharoung, Songherdthong, Songhkanam, Songhklampakdee, Songhnoonathinee, Songhpa, Songkaet, Songkamlao, Songkampakdee, Songkawanno, Songkawe, Songkeae, Songkhakun, Songkhaphap, Songkhiea, Songkhilb, Songkhontod, Songkhumchum, Songkhumpa, Songkhunawedh, Songkhunnas, Songkierti, Songkijwisajakran, Songkongg,