Cognomen Rantay (Rantai 
, Rantay 
) , around the world, is quite a rare surname. The surname Rantay is characteristic of Lesotho, where it is quite a common surname, Malaysia, where it is a rare surname, and South Africa. Much less frequently, Rantay is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rantai | Indonesia, South Africa, Lesotho, Malaysia, India |
| Rantay | India, United States, Philippines |