Globally, Illest (Illest 
) is a very rare primarily masculine, but very infrequently feminine given name. The given name Illest is habitual in Eastern Asia, particularly China, where it is an extremely rare male name. Likewise, Illest is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Illest | China, South Africa, United States, Australia |