Bengali films of 2004 witnessed a lot of experimentation as far as the cast and crew and the subjects of the films were concerned.
The following Bengali films were released in the year 2004:
| Aabar Asibo Phire | Dadu Number 1 | Mastan | Sarisrip |
| Abhishek | Debdoot | Mayer Mon | Satabdir Galpo |
| Adhikar | Debipaksha | Mon Jake Chay | Shakti |
| Agni | Dwitio Paksha | Ora Kara | Shudhu Tumi |
| Akritagno | Ek Chilte Sindur | Paribar | Sindurer Bandhan |
| Akrosh | Gerakal | Prahar | Surya |
| Ami Je Ke Tomar | Hathat Nirar Janyo | Prem Korechhi Besh Korechhi | Swami Chhintai |
| Anurag | Iti Srikanto | Premi | Swapne Dekha Rajkanya |
| Anyay Atyachar | Kalo Chita | Protisodh | Tin Ekke Tin |
| Atotayee | Kritodas | Raja Babu | Tista Parer Kanya |
| Badsha: The King | Kuyasha | Ram Lakshman | Tyag |
| Bandhan | Mahulbonir Sereng | Sagar Kinare | Warish |
| Barud | Mamatar Bandhan | Sajani | |
| Cooli | Manasa Aamar Maa | Samudra Sakshi |