List of Tamil films of 2004

Prior to the amendment of Tamil Nadu Entertainments Tax Act 1939 on 4 October 2004, gross was 125 per cent of net for all films. Post-amendment, gross fell to 115 per cent of net. The Commercial Taxes Department disclosed ₹59.09 crore in entertainment tax revenue for the year.

A list of films released in the Tamil film industry in India in 2004:

Other releases
The following films were also released in 2004, though the release date remains unknown.