Family name มหาศิริไท (มหาศิริไท 
) , worldwide, is an extremely rare cognomen. The surname มหาศิริไท is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| มหาศิริไท | Thailand |
เกษมศักดิ์, and ศักดิ์สิทธิ์