Cognomen อิศวร (Isavara 
, Isuan 
, อิศวร ) , throughout the world, is a rare surname. The last name อิศวร is habitual in Philippines, where it is a rare surname, Romania, and Honduras, where it is a very rare surname. In absolute terms, it most frequently occurs in Philippines, Nigeria, and Romania. Likewise, อิศวร is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Isavara | India, Thailand |
| Isuan | Philippines, Mexico, Romania, Thailand, Nigeria |
| อิศวร | Thailand |