Motor Sundaram Pillai is a 1966 Indian Tamil-language drama film directed by S. S. Balan in his directorial debut. The story revolves around Motor Sundaram Pillai, a man known for being virtuous who leads a double life, maintaining two separate families.
The film stars Sivaji Ganesan, Ravichandran, Sowcar Janaki, and Jayalalithaa. It was written by Veppathur Kittoo, who originally penned the screenplay for its Hindi predecessor "Grahasti".
Motor Sundaram Pillai was released on January 26, 1966, and was a commercial success, running for over 100 days in theatres.