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Kamal Haasan as Gunaa |
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Roshini as Rohini |
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Rekha as Rosy |
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Janagaraj as Gunaa's uncle |
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S. P. Balasubramaniam as CBI officer Ramaiah |
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Girish Karnad as Doctor Ganesh |
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Sharat Saxena as Suresh Kumar |
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Pradeep Shakti as Ismail |
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Ananthu as Gunaa's cellmate |
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Sethu Vinayagam as Doctor |
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Ajay Rathnam as Inspector Moovendar |
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S. Varalakshmi as Manonmani |
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Kaaka Radhakrishnan as Madasami |
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Saritha as Rohini (voice) |
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R.S. Shivaji as Barber (uncredited) |
| Writing | Vaali | Lyricist |
| Camera | Venu | Director of Photography |
| Sound | Kamal Haasan | Playback Singer |
| Sound | இளையராஜா | Original Music Composer |
| Directing | Santhana Bharathi | Director |
| Production | Alamelu Subramaniam | Producer |
| Editing | V. T. Vijayan | Editor |
| Writing | Balakumaran | Dialogue |
| Editing | B. Lenin | Editor |
| Sound | இளையராஜா | Playback Singer |
| Sound | S. Janaki | Playback Singer |
| Sound | Ustad Sultan Khan | Playback Singer |
| Sound | K. J. Yesudas | Playback Singer |
| Sound | S. Varalakshmi | Playback Singer |
| Writing | Abhirami Pattar | Lyricist |
| Costume & Make-Up | Sarika | Costume Designer |
| Sound | Deepan Chatterjee | Sound Designer |
| Directing | R.S. Shivaji | Co-Director |
| Crew | Raghuram | Choreographer |
| Crew | Raju Sundaram | Choreographer |
| Crew | Vikram Dharma | Stunt Coordinator |
| Writing | Sab John | Story |
| Writing | Sab John | Screenplay |
| Art | Magie | Art Direction |
