Shah Rukh Khan as Aman Mathur

Preity Zinta as Naina Catherine Kapur

Saif Ali Khan as Rohit Patel

Jaya Bachchan as Jennifer Kapur

Sushma Seth as Lajjo Kapur

Reema Lagoo as Namrata Mathur

Athit Naik as Shiv Kapur

Jhanak Shukla as Jiya Kapur

Delnaaz Irani as Jaspreet "Sweetu" Kapoor

Lillete Dubey as Jaswinder "Jazz" Kapoor

Sulabha Arya as Kanta Bhen

Anaita Shroff Adajania as Geeta Parekh

Sonali Bendre as Dr. Priya

Shoma Anand as Kammo

Kamini Khanna as Vimmo

Satish Shah as Karsanbhai Patel

Ketki Dave as Sarlaben Patel

Simone Singh as Camilla

Dheepesh Bhatt as Frankie Ramdayal

Rajpal Yadav as Guru

Dara Singh as Pritam Chaddha

Toni Vitale as Va Va Voom Girl

Steve West as Mike

Bev Reese as Wedding Guest

Stefanie Samuels as Bagel Vendor

Nadir Hasan as Basketball Player

Michael Pinkhas as Office Clerk

Andrew Vannata as Jenny's Restaurant Customer

Sanjay Kapoor as Abhay Malhotra

Kajol as Special Appearance in "Maahi Ve" Song

Rani Mukerji as Special Appearance in "Maahi Ve" Song

Anil Mehta as Rajnath Kapur (uncredited)

Joseph Gatt as Dancer in Club (uncredited)

Nikolett Lemmon as Singer in Choir (uncredited)

Uday Chopra as Day 6 Narrator (uncredited)

Farah Khan as Jenny's Restaurant Customer (uncredited)

Karan Johar as Jenny's Restaurant Customer (uncredited)