| Surname | Mother Tongue | State of Origin |
|---|
| Arte | Mizo | Mizoram |
| Rath | Oriya | Orissa |
| Rathi | Haryanvi | Haryana |
| Rathi | Marwari; Garhwali | North Indian (Himachal, Rajasthan, Uttarakhand, U.P, Delhi) |
| Rathiea | | |
| Ratta | | |
| Ratti | | |
| Rawat | Marwari; Garhwali | North Indian (Himachal, Rajasthan, Uttarakhand, U.P, Delhi) |
| Reddy | Telugu | Andhra Pradesh |
| Reddy | Kannada, Tulu | Karnataka |
| Riddhi | | |
| Rout | Oriya | Orissa |
| Radhey | | |
| Radia | | |