| Person | Type | Job | Role(s) |
|---|---|---|---|
 A.R. Rahman | Crew | Sound | Original Music Composer |
 K. V. Anand | Crew | Camera | Director of Photography |
 Raghava Lawrence | Crew | Crew | Choreographer |
 Prabhu Deva | Crew | Crew | Choreographer |
 Raju Sundaram | Crew | Crew | Choreographer |
 Shankar | Crew | Writing | Screenplay, Director, Story |
 S. P. Muthuraman | Crew | Production | Co-Producer |
 M. Saravanan | Crew | Production | Producer |
 Sujatha Rangarajan | Crew | Writing | Dialogue, Writer |
Thotta Tharani | Crew | Art | Art Direction |
 Tirlok Malik | Crew | Production | Line Producer |
 Udit Narayan | Crew | Sound | Playback Singer |
 Vairamuthu | Crew | Writing | Lyricist |
 Anthony | Crew | Editing | Editor |
 Madhushree | Crew | Sound | Playback Singer |
 Peter Hein | Crew | Crew | Stunts Coordinator |
 Sayanora Philip | Crew | Sound | Playback Singer |
 Suresh Peters | Crew | Sound | Playback Singer |
 Pa. Vijay | Crew | Writing | Lyricist |
 S. P. Balasubramaniam | Crew | Sound | Playback Singer |
M. S. Guhan | Crew | Production | Producer |
Vaali | Crew | Writing | Lyricist |
 Vijay Yesudas | Crew | Sound | Playback Singer |
Gandhi Krishna | Crew | Directing | Co-Director |
AS Laxmi Narayanan | Crew | Sound | Sound Mixer |
 Brinda | Crew | Crew | Choreographer |
Adam Dasan | Crew | Directing | Assistant Director |
 Na. Muthu Kumar | Crew | Writing | Lyricist |
 Hariharan | Crew | Sound | Playback Singer |
 Naresh Iyer | Crew | Sound | Playback Singer |
 Chinmayi Sripaada | Crew | Sound | Playback Singer |
A. R. Reihana | Crew | Sound | Playback Singer |
 Benny Dayal | Crew | Sound | Playback Singer |
Blaaze | Crew | Sound | Playback Singer |
Tanvi Shah | Crew | Sound | Playback Singer, Lyricist |
 Cochin Haneefa | Cast | Actor | Kuzhanthai Velu |
 Ilavarasu | Cast | Actor | Cameo Appearance |
 Kanal Kannan | Cast | Actor | Cameo Appearance |
 Manivannan | Cast | Actor | Arumugam |
 Raghuvaran | Cast | Actor | Dr. Chezhian |
 Rajinikanth | Cast | Actor | Sivaji Arumugam |
 Suman Talwar | Cast | Actor | Adisheshan |
 Vivek | Cast | Actor | Arivu |
 Chinni Jayanth | Cast | Actor | Cameo Appearance |
 Dhamu | Cast | Actor | Cameo Appearance |
 Kaniha | Cast | Actress | Voice Dubbing for Shriya Saran |
 Livingston | Cast | Actor | Police Inspector |
 M. S. Bhaskar | Cast | Actor | Pazhanisamy |
 Mayilsamy | Cast | Actor | Cameo Appearance |
 Nayanthara | Cast | Actress | Special Appearance for Ballelaka Song |
 Pyramid Natarajan | Cast | Actor | Arivu's Lawyer |
 Shriya Saran | Cast | Actress | Tamizhselvi Ramalingham |
 Vadivukarasi | Cast | Actress | Mrs. Arumugam |
 Bose Venkat | Cast | Actor | Velu |
Pattimandram Raja | Cast | Ramalingam | |
 Swaminathan | Cast | Actor | Customer who enquires about Kanjira |
 Andreanne Nouyrigat | Cast | Actress | Dancer (Uncredited) |
 Pithamagan Mahadevan | Cast | Actor | Astrologer |
 Uma Padmanabhan | Cast | Actress | Jyothi |
Solomon Pappaiah | Cast | Thondaiman | |
A. C. Murali Mohan | Cast | Doctor who provides treatment to Kuzhandhaivel | |
| Person | Type | Job | Role(s) |
