Dharmendra as Dr. Parimal Tripathi / Pyare Mohan

Sharmila Tagore as Sulekha Chaturvedi

Om Prakash as Raghavendra Sharma

Usha Kiran as Sumitra Sharma

Amitabh Bachchan as Professor Sukumar Sinha

Govardhan Asrani as Prashant Kumar Shrivastav

Jaya Bachchan as Vasudha

Lily Chakravarty as Lata Shrivastav

David Abraham Cheulkar as Haripad Chaturvedi

Keshto Mukherjee as James D'Costa

Lalita Kumari as Botany Teacher

Dev Kishan as Kaka (Old House Keeper)

Harish Magan as Thief

Amal Sen as Doorman