Nai Roshni

Ashok Kumar

Professor Kumar (as Padmashree Ashok Kumar)

Mala Sinha

Rekha

Biswajit Chatterjee

Prakash

Raaj Kumar

Jyoti Kumar

Bhanumathi

Padma, Professor Kumar's wife

Tanuja Samarth

Chitra Kumar, Professor Kumar's daughter

Sulochana Latkar

Prakash's mother and Professor Kumar's first wife

Asit Sen

Moti, Jyoti's friend at mill