Worldwide, พีรศิษฐ์ (พีรศิษฐ์ 
) is a very rare epicene first name. The first name พีรศิษฐ์ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare gender-neutral name.
| VARIANT | COUNTRY |
|---|---|
| พีรศิษฐ์ | Thailand |
พุมพวง, พิกุลผล, and ยุติธรรมภิญโญ