Cognomen Mulchan (Mulchan 
) , in all the world, is a rare surname. The surname Mulchan is habitual in Trinidad and Tobago, where it is quite a rare surname, Canada, where it is a very rare surname, and the United States. Also, Mulchan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Mulchan | Canada, Saudi Arabia, United States, Trinidad and Tobago, India |