T. Krishnan, popularly known as Kavithalayaa Krishnan, is an Indian actor known for playing supporting roles in Tamil film and television. He is a regular artist in many K. Balachander's films and television serials produced by Kavithalayaa Productions and Kavithalayaa got along as his name.

Kavithalayaa Krishnan has acted in over 120 films, 60 television serials and made over 2500 stage appearances. He was awarded Kalaimamani (2005) by Government of Tamil Nadu. He started acting in stage plays along with Crazy Mohan who was his classmate when he did his engineering at College of Engineering, Guindy. He made his film debut in Poikkal Kudhirai (1983), a remake of Crazy Mohan's play Marriage made in Saloon directed by K. Balachander.