 | Darsheel Safary als Ishaan Nandkishore Awasthi |
 | Aamir Khan als Ram Shankar Nikumbh |
 | Tisca Chopra als Maya Awasthi |
 | Vipin Sharma als Nandkishore Awasthi |
 | Tanay Chheda als Rajan Damodaran |
 | Sachet Engineer als Yohaan Awasthi |
 | Girija Oak als Jabeen |
| Bugs Bhargava als Sen Sir |
| Shankar Sachdev als Tiwari Sir |
| Lalita Lajmi als Lalita Lajmi |
| Ravi Khanvilkar als Mr. Holkar |
 | Meghna Malik als Victoria Teacher (uncredited) |
 | M. K. Raina als Boarding School (uncredited) |
| Ayaan als Ishaan Awasthi - 10 months old |
| Veer Mohan als Ishaan Awasthi - 2 years old |
| Aniket Engineer als Young Yohan Awasthi |
| Aamir Khan | Director |
| Amole Gupte | Screenplay |
| Deepa Bhatia | Editor |
| Aamir Khan | Producer |
| Kiran Rao | Associate Producer |
| Ajay Bijli | Co-Producer |
| Amole Gupte | Story |
| Satyajit Pande | Director of Photography |
| Amole Gupte | Co-Director |
| Sanjeev K Bijli | Co-Producer |
| Sunitha Ram | Co-Producer |
| Manoj Shroff | Line Producer |
| Amole Gupte | Dialogue |
| Ehsaan Noorani | Original Music Composer |
| Varun Kapoor | Costume Design |
| Advait Chandan | Assistant Production Manager |
| B. Shrinivas Rao | Executive Producer |
| Loy Mendonsa | Original Music Composer |
| Shankar Mahadevan | Original Music Composer |
