| Surname | Mother Tongue | State of Origin |
|---|
| Shangwan | Haryanvi | Haryana |
| Shingane | | |
| Shinjinee | | |
| Shyamsundar | | |
| Singhania | Marwari; Garhwali | North Indian (Himachal, Rajasthan, Uttarakhand, U.P, Delhi) |
| Singson | Meetei; Paite-kuki; Mizo | Manipur |
| Somasundara | | |
| Somasundaram | | |
| Sanasam | Meetei; Paite-kuki; Mizo | Manipur |
| Sangam | | |
| Sangameswar | | |
| Sangem | | |
| Sanjna | | |
| Senjam | Meetei; Paite-kuki; Mizo | Manipur |