| Year | Film | Role | Other notes |
|---|
| 1998 | Dil Se | Preeti Nair | Winner, Filmfare Best Female Debut Award
Dubbed into Tamil as Uyire
Dubbed into Telugu as Prema Tho |
| Soldier | Preeti Singh | |
| Premante Idera | Jaanu | Telugu film
Dubbed into Hindi as Dulhan Dilwale Ki |
| 1999 | Raja Kumarudu | Rani | Telugu film
Dubbed into Hindi as Prince No. 1 |
| Sangharsh | CBI Officer Reet Oberoi | |
| Dillagi | Rani | Guest Appearance |
| 2000 | Kya Kehna | Priya Baxi | Nomination, Filmfare Best Actress Award |
| Har Dil Jo Pyar Karega | Jahnvi | |
| Mission Kashmir | Sufiya Parvez | |
| 2001 | Farz | Kajal Singh | |
| Chori Chori Chupke Chupke | Madhubala (Madhu) | Nomination, Filmfare Best Supporting Actress Award |
| Dil Chahta Hai | Shalini | |
Yeh Raaste Hain
Pyaar Ke | Sakshi | |
| 2002 | Dil Hai Tumhaara | Shalu | |
| 2003 | The Hero: Love Story of a Spy | Reshma/Ruksar | |
| Armaan | Sonia Kapoor | Nomination, Filmfare Best Villain Award. |
| Koi... Mil Gaya | Nisha | Nomination, Filmfare Best Actress Award |
| Kal Ho Naa Ho | Naina Catherine Kapur | Winner, Filmfare Best Actress Award |
| 2004 | Lakshya | Romila Dutta | |
| Dil Ne Jise Apna Kahaa | Dr. Parineeta (Pari) | |
| Veer-Zaara | Zaara Hayat Khan | Nomination, Filmfare Best Actress Award |
| 2005 | Khullam Khulla Pyaar
Karen | Priti | |
| Salaam Namaste | Ambar 'Amby' Malhotra | Nomination, Filmfare Best Actress Award |
| 2006 | Alag | | Special Appearance in song Sabse Alag |
| Krrish | Nisha | Special Appearance |
| Kabhi Alvida Naa Kehna | Rhea Saran | Nomination, Filmfare Best Supporting Actress Award |
| Jaan-E-Mann | Piya Goyal | |
| 2007 | Jhoom Barabar Jhoom | Alvira Khan | |
| The Last Lear | Shabnam | Post-production
First English language film |
| Om Shanti Om | Herself | Special appearance in song Deewangi Deewangi |
| 2008 | Heroes | | Releasing on May 1, 2008 |
| Har Pall | | Filming |
| Suryamukhi | Suryamukhi | Announced |
| Heaven on Earth | Chand | Filming |
