List of Tamil films of 2003
Post-amendment to the Tamil Nadu Entertainments Tax Act 1939 on 12 June 2000, Gross fell to 125 per cent of Nett. Commercial Taxes Department disclosed 75.07 crore in entertainment tax revenue for the year.
A list of films released in the Tamil film industry in India in 2003:
The following films also released in 2003, though the release date remains unknown.
| Title | Director | Cast | Production | Music director |
| Adhaanda Idhaanda | Antony | Pandiarajan, Sangeetha | Deva | - |
| Beacham | P. Selvam | Aneesh Ravi, Sonia Mohandas | Vidyasagar | - |
| Bhayam | - | |||
| E. P. Ko 215 | - | |||
| Oru Thadava Sonna | M. Jameenraj | Chinni Jayanth, Swarna, Lavanya | Kumaran | - |
| Paththikichu | S. S. Arasan | Devaguru, Manjari, Shakeela, Abhinayashree | Bhoopathy – Ravi Varma | - |
| Rekkai | B. Lenin | Narayana Rao, M. S. Vishalakshi, N. Madankumar | Amarji | - |
| Vaanam Vaazhthattum | Raveeshwar | Vimalahasan, Rashmi, Kulkarni | Adithyan | - |
| Vani Mahal | Jayram | Vignesh, Suvalakshmi | Deva | - |