Cognomen Khillan (Khillan 
) , around the world, is a rare last name. The surname Khillan is habitual in Australia, where it is a very rare surname, Georgia, and India. Measured by absolute frequency, it is the most numerous in India, the United States, and Australia. More frequently, Khillan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Khillan | Australia, United States, India, Georgia |
| rajnish khillan professor of clinical medicine |
|