Last name Rethan (Rethan 
) , all over the world, is a very rare cognomen. The last name Rethan is habitual in Malaysia, where it is a very rare surname, India, where it is an extremely rare surname, and the United States. Also, Rethan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rethan | South Africa, Spain, Malaysia, United States, India |