Vidya Balan
Shakuntala Devi
Sanya Malhotra
Anupama Banerji
Jisshu Sengupta
Paritosh Banerji
Amit Sadh
Ajay Abhaya Kumar
Luca Calvani
Javier
Sheeba Chaddha
Tarabai
Prakash Belawadi
Shakuntala's Father
I
Ipshita Chakraborty Singh
Shakuntala's Mother
Ahan Nirban
Srinivas
Chahat Tejwani
Young Anu
Nisha Aaliya
Bookshop Interviewer
Max Dowler
BBC Host
Phillip Roy
Mr. Stevens - Shakuntala's lawyer
Alex Bartram
Edward
Purnendu Bhattacharya
Ajay's Father
Neil Bhoopalam
Dheeraj
I
Ian Bailley
Mediator
Jon Wennington
Mathematician (uncredited)
M
Marianne March
Barbara Jensen