Family name Pikulkaew (Pikulkaew 
) , in the world, is a very rare cognomen. The cognomen Pikulkaew is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Likewise, Pikulkaew is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Pikulkaew | United States, Thailand |
พิกุลแก้ว, พิกุลแก้่ว, and ภิกุลแก้ว