List of Tamil films of 2005
Post-amendment to the Tamil Nadu Entertainments Tax Act 1939 on 4 October 2004, Gross fell to 115 per cent of Nett. Commercial Taxes Department disclosed 43.65 crore in entertainment tax revenue for the year.
A list of films produced in the Tamil film industry in India in 2005 by release date:
The following Tamil films also released in 2005, though the release date remains unknown.
| Title | Director | Cast | Music director |
| Ambuttu Imbuttu Embuttu | Ashok Kashyap | Ashok Kashyap, Ashwini, Mohana, Tejaswini Prakash, Crane Manohar | Dhina |
| Unnai Enakku Pidichuruku | Anbu Saravanan | Aswin, Aswini, Naveen, Munna | Sirpy |
| Iyyappa Saamy | Ravi-Raja | Pandiarajan, Ishaq Hussaini, Preethi Varma, Lavanya | Pradeep Ravi |
| Sendhalam Poove | A. C. Deepa Raj | Livingston, Devayani | Vimalraj |
| Thiru Thiru | Pandiarajan, Nanditha Jennifer | ||
| Plus Koottani | Babu Ganesh | Babu Ganesh, Manthra | S. A. Rajkumar |
| Pillayar Pettaiyum Kandhu Vattiyum | |||
| Pen Nila | |||
| Pondatti Jeyichutta | |||
| Povoma Oorgolam | |||
| My Dear Ramasamy | |||
| Rekkai | B. Lenin | G. V. Narayana Rao, M. S. Visalatchi, N. Madhan Kumar | Amarji |
| Jathi | R. Vijayaragava | Sathya, Sujitha | Agni Kalaivani |
| Vairavan | Karikalan | Karikalan, Pandiarajan, Karisma, Sathya | Aasan |