List of Tamil films of 2009

Prior to the amendment of Tamil Nadu Entertainments Tax Act 1939 on 22 July 2006, gross was 115 per cent of net for all films. Post-amendment, gross equalled net for films with pure Tamil titles. Commercial Taxes Department disclosed ₹13.18 crore in entertainment tax revenue for the year. Producer Dhananjayan reports in his publication The Art & Business Of Cinema that the box office generated ₹525 crore in domestic net against an investment of ₹650 crore.

The following is a list of films produced in the Tamil cinema in India that were released in 2009.

2009 releases
The following is a list of films produced in the Tamil film industry in India, which were released theatrically in 2009. They are presented in order of their release dates..