Abhinay Vaddi as Srinivasa Ramanujan

Suhasini Maniratnam as Komalatammal

Kevin McGowan as G. H. Hardy

Abbas as Prasanta Chandra Mahalanobis

Anmol as Young Srinivasa Ramanujan

Bhama as Janaki

Richard Walsh as Francis Spring

Sarath Babu as Diwan Bahadur R. Ramachandra Rao I. C. S.

Radha Ravi as Prof. Singaravelu Mudaliar

Madhan Bob as Prof. Krishna Shastri

Y. G. Mahendran as S. Narayana Iyer

Manobala as Krishna Rao

Satish Kumar as Anandhu

Thalaivasal Vijay as Sathiyapriya Rayar

Manibharathi as Krishnan

Delhi Ganesh as

Kitty as Seshu Iyer

T. P. Gajendran as T. Namberumal Chetty

Mohan Raman as

Cloudia Swann as Ms. Bourne

Mike Parish as Doctor Charles

Harsh Naik as Chatterjee

Lizzie Bourne as Ms. Gertrude Hardy

Jon Wennington as Professor