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 net. The 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:
Box office collection
The following is the [list of highest-grossing Tamil cinema|Tamil films|list of highest-grossing Tamil cinema films] released in 2005.| Rank | Title | Production company | Worldwide gross |
| 1 | Chandramukhi | Sivaji Productions | |
| 2 | Anniyan | Oscar Films | |
| 3 | Ghajini | Sri Saravana Creations | |
| 4 | Thirupaachi | Super Good Films | |
| 5 | Sivakasi | Sri Surya Movies | |
| 6 | Sandakozhi | GK Film Corporation | |
| 7 | Sachein | V Creations | |
| 8 | Aaru | Gemini Productions | |
| 9 | Ayya | Kavithalayaa Productions | |
| 10 | Majaa | Rockline Entertainment |
List of Tamil films
October—December
;Other releasesThe following Tamil films were also released in 2005, though the release date remains unknown.
| Title | Director | Cast | Music director |
| 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 | S. D. Shri Ram Vasu | Pandiarajan, Nanditha Jennifer | |
| Pillayar Pettaiyum Kandhu Vattiyum | Govindarasu | ||
| Pen Nila | |||
| Pondatti Jeyichutta | |||
| Povoma Oorgolam | |||
| My Dear Ramasamy | |||
| Rekkai | B. Lenin | G. V. Narayana Rao, M. S. Visalatchi, N. Madhan Kumar | Amarji |
| Vairavan | Karikalan | Karikalan, Pandiarajan, Karisma, Sathya | Aasan |