| Person | Type | Job | Role(s) |
|---|---|---|---|
 A.R. Rahman | Crew | Sound | Original Music Composer, Playback Singer |
 Kamal Haasan | Crew | Crew | Thanks |
 Manish Malhotra | Crew | Costume & Make-Up | Costume Design |
Mary E. Vogt | Crew | Costume & Make-Up | Costume Design |
 Prabhu Deva | Crew | Crew | Choreographer |
 Raju Sundaram | Crew | Crew | Choreographer |
 Shankar | Crew | Writing | Screenplay, Director, Dialogue, Story |
 Sabu Cyril | Crew | Art | Art Direction |
 Sadhana Sargam | Crew | Sound | Playback Singer |
 Sujatha Rangarajan | Crew | Writing | Dialogue, Story |
 Vairamuthu | Crew | Writing | Lyricist |
 Yuen Woo-Ping | Crew | Crew | Stunt Coordinator |
 Anthony | Crew | Editing | Editor |
Frankie Chung | Crew | Visual Effects | Visual Effects Supervisor |
 Peter Hein | Crew | Crew | Stunts Coordinator |
Pravin Mani | Crew | Sound | Playback Singer |
R. Ratnavelu | Crew | Camera | Director of Photography |
 Shreya Ghoshal | Crew | Sound | Playback Singer |
 Shweta Mohan | Crew | Sound | Playback Singer |
 Madhan Karky | Crew | Writing | Dialogue, Lyricist |
Santosh Kotkar | Crew | Art | Art Direction |
 Atlee | Crew | Directing | Assistant Director |
 Pa. Vijay | Crew | Writing | Lyricist |
 S. P. Balasubramaniam | Crew | Sound | Playback Singer |
 Kalanithi Maran | Crew | Production | Producer |
 Vijay Prakash | Crew | Sound | Playback Singer |
Shobi Paulraj | Crew | Crew | Choreographer |
Dinesh Shikari | Crew | Crew | Choreographer |
 Hariharan | Crew | Sound | Playback Singer |
 Naresh Iyer | Crew | Sound | Playback Singer |
 Chinmayi Sripaada | Crew | Sound | Playback Singer |
 Javed Ali | Crew | Sound | Playback Singer |
 Pradeep Kumar | Crew | Sound | Playback Singer |
 Benny Dayal | Crew | Sound | Playback Singer |
Keerthi Sagathia | Crew | Sound | Playback Singer |
Tanvi Shah | Crew | Sound | Playback Singer |
 Lady Kash | Crew | Sound | Playback Singer, Lyricist |
Krissy | Crew | Sound | Playback Singer, Lyricist |
Yogi B | Crew | Sound | Playback Singer |
Khatija Rahman | Crew | Sound | Playback Singer |
 Aishwarya Rai Bachchan | Cast | Actress | Sana |
 Cochin Haneefa | Cast | Actor | Traffic Police |
 Danny Denzongpa | Cast | Actor | Dr. Bohra |
 Kalabhavan Mani | Cast | Actor | Pachaimuthu |
 Rajinikanth | Cast | Actor | Dr. Vaseegaran / Chitti |
Sabu Cyril | Cast | Actor | Agent Shah |
 Delhi Kumar | Cast | Actor | Vaseegaran's Father |
 Karunas | Cast | Actor | Ravi |
 Santhanam | Cast | Actor | Siva |
 Shriya Sharma | Cast | Actress | Curious Student |
 Chaams | Cast | Actor | Barber |
 Raaghav | Cast | Actor | Neighbourhood Bully |
 Rekha Suresh | Cast | Actress | |
 Boxer Dheena | Cast | Actor | Thug |
 Devadarshini | Cast | Actress | Latha |
Sugunthan | Cast | Police Inspector | |
Devadasu Kanakala | Cast | Actor | K. Bhajanlal, a customer at The Park Hotel |
Revathi Sankaran | Cast | Actress | Vaseegaran's mother |
| Person | Type | Job | Role(s) |
