| Year | Film | Role | Other notes |
|---|
| 2001 | Ajnabee | Sonia/Neeta | Winner, Filmfare Best Debut Award |
| 2002 | Takkari Donga | Panasa | Telugu film |
| Aankhen | Raina | Special Appearance |
| Mere Yaar Ki Shaadi Hai | Ria | Cameo |
| Raaz | Sanjana Dhanraj | Nomination, Filmfare Best Actress Award |
| Chor Machaaye Shor | Ranjita | |
| Gunaah | Prabha Narayan | |
| 2003 | Jism | Sonia Khanna | Nomination, Filmfare Best Villain Award |
| Footpath | Sanjana | |
| Rules - Pyaar Ka Superhit Formula | Herself | Special Appearance |
| Zameen | Nandini | |
| 2004 | Ishq Hai Tumse | Kushboo | |
| Aetbaar | Ria Malhotra | |
| Rudraksh | Gayetri | |
| Rakht: What If You Can See the Future | Drishti | |
| Madhoshi | Anupama Kaul | |
| 2005 | Chehraa | Megha | |
| Sachien | Manju | with actor Vijay |
| Barsaat | Anna | |
| No Entry | Bobby | Nomination, Filmfare Best Supporting Actress Award |
| Apaharan | Megha | |
| Shikhar | Natasha | |
| Viruddh | Passerby | Special Appearance |
| 2006 | Hum Ko Deewana Kar Gaye | Sonia Berry | |
| Darna Zaroori Hai | Varsha | |
| Phir Hera Pheri | Anuradha | |
| Alag | | Special Appearance in song Sabse Alag |
| Corporate | Nishigandha Dasgupta | Nomination, Filmfare Best Actress Award |
| Omkara | Billo Chamanbahar | Special Appearance |
| Jaane Hoga Kya | Aditi | |
| Dhoom 2 | ACP Shonali Bose/Monali Bose | |
| 2007 | Nehlle Pe Dehlla | Pooja | |
| No Smoking | | Special Appearance in song Phook De |
| Om Shanti Om | Herself | Special Appearance |
| Dhan Dhana Dhan Goal | Rumana | Releasing on November 23, 2007 |
| 2008 | Race | | Post-Production |
| International Hera Pheri | | Pre-Production |
