Languages written with Tamil script
| Language | Writing System Code | Writing System Status | SLDR/CLDR locale | Regional variants |
|---|---|---|---|---|
| Badaga | bfq-Taml | in use | bfq-Taml-IN (India) | |
| Chetti, Moundadan | cty-Taml | in use | cty-Taml-IN (India) | |
| Chetti, Wayanad | ctt-Taml | in use | ctt-Taml-IN (India) | |
| Eravallan | era-Taml | unwritten | era-Taml-IN (India) | |
| Irula | iru-Taml | in use | iru-Taml-IN (India) | |
| Kanikkaran | kev-Taml | in use | kev-Taml-IN (India) | |
| Kota | kfe-Taml | in use | kfe-Taml-IN (India) | |
| Kurumba, Betta | xub-Taml | in use | xub-Taml-IN (India) | |
| Kurumba, Jennu | xuj-Taml | unwritten | xuj-Taml-IN (India) | |
| Kurumba, Kannada | kfi-Taml | in use | kfi-Taml-IN (India) | |
| Muthuvan | muv-Taml | in use | muv-Taml-IN (India) | |
| Paniya | pcg-Taml | in use | pcg_Taml (SLDR)  | pcg-Taml-IN (India) |
| Sourashtra | saz-Taml | in use | saz-Taml-IN (India) | |
| Tamil | ta-Taml | in use | ta (CLDR) | ta-Taml-IN (India) ta-Taml-MY (Malaysia) ta-Taml-SG (Singapore) ta-Taml-LK (Sri Lanka) |
| Toda | tcx-Taml | in use | tcx-Taml-IN (India) | |
| Vaagri Booli | vaa-Taml | in use | vaa-Taml-IN (India) |