Cast of Koi... Mil Gaya
 Rekha (I) as Sonia Mehra |
 Hrithik Roshan as Rohit Mehra |
 Preity Zinta as Nisha |
 Prem Chopra as Harbans Saxena |
Johnny Lever as Chelaram Sukhwani |
 Hansika Motwani as The super six |
Crew of Koi... Mil Gaya
James Colmer as designer: alien / designer: spaceship |
 Alka Yagnik as playback singer |
