7 Tamil films of 2003 ranked by box office. #1: Saamy (₹25 crore).
| # | Film | Lead | Director | Budget | Box office | Multiple |
|---|---|---|---|---|---|---|
| 1 | Saamy | Hari | ₹5 crore | ₹25 crore | 5.00x | |
| 2 | Dhool | Dharani | ₹7 crore | ₹12 crore | 1.71x | |
| 2 | Thiruda Thirudi | Subramaniam Siva | ₹2 crore | ₹12 crore | 6.00x | |
| Boys | S. Shankar | $2.2 million | $2 million | 0.91x | ||
| Ennai Thalatta Varuvala | $500,000 | $500,000 | 1.00x | |||
| Anjaneya | N. Maharajan | $500,000 | $500,000 | 1.00x | ||
| Parasuram | Srihari | Arjun Sarja | $500,000 | $500,000 | 1.00x |
Figures are shown in the currency they were reported in (Wikipedia, Wikidata or TMDB); no conversion.