Throughout his career, Om Prakash appeared in numerous films, often portraying memorable character roles. Some of his notable works include:

• "Chupke Chupke" (1975): A comedy where he played a significant role.

• "Jab Jab Phool Khile" (1965): A romantic drama featuring his versatile acting.

• "Dus Lakh" (1966): A film where he had a prominent part.

• "Gopi" (1970): Starred alongside Dilip Kumar, portraying his elder brother.

• "Namak Halaal" (1982): A popular film showcasing his comedic talent.

• "Sharaabi" (1984): Featured in a notable role alongside Amitabh Bachchan.