Rajendra Kumar
— Dr. Gautamdas
Saira Banu
— Meloda
Balraj Sahni
— Gautamdas' dad
Chetan Anand
— Dr. Akhira (Meloda's dad)
Om Prakash
— Hurato
Bertrand Russell
— Himself (as Lord Bertrand Russell)
Sunder
— Yamasaki
Chand Usmani
— Hiroka (Hurato's daughter)
Suresh
Sajjan Lal Purohit
Master Shahid
Mridula Rani
