Krishnan Thoothu also known as Sri Krishnan Thoothu was a film produced by S. M. Letchumanan Chettiyar and Rajagopal Talkies in the year 1940. The film was directed by R. Prakash. This film was known famously since this was the debut Tamil film of Telugu actress P. Kannamba.
The story of the film was of the history of Lord Krishna undertaking the mission of getting justice for the Pandavas from the Kaurava King Duryodhana. Serukulathur Sama played the main role of Lord Krishna. The debut actress P. Kannamba played the heroine role. Both N. S. Krishnan and T. A. Mathuram contributed to the short film with their comedies.