Aamir Khan as Akash Malhotra

Saif Ali Khan as Sameer Mulchandani

Akshaye Khanna as Siddharth "Sid" Sinha

Preity Zinta as Shalini

Sonali Kulkarni as Pooja

Dimple Kapadia as Tara Jaiswal

Ayub Khan as Rohit

Rajat Kapoor as Mahesh

Samantha Tremayne as Deepa

Suchitra Pillai as Priya

Suhasini Mulay as Sid's Mother

Bomi Doctor as Sameer's Father

Anjula Bedi as Sameer's Mother

Ahmed Khan as Akash’s Father

Kannu Gill as Akash's Mother

Rakesh Pandey as Rohit's Father

Mandala Tayde as Smiling Girl

Beatrice Gibson as Kristine

Deepak Malhotra as Mr Mehta

Asad Dadarkar as Subodh

Raj Zutshi as Tara's Ex-Husband (voice)

Meenakshi Verma as Doctor

Gordon Waddell as Australian DOP

Kiran Rao as Deepa's Friend (uncredited)

Samara Cannan as Hotel Receptionist (uncredited)

Kerry Casey as Clown (uncredited)