Vallavanukku Vallavan is a 1965 Indian Tamil-language action thriller film, directed by R. Sundaram, son of T. R. Sundaram, and written by A. L. Narayanan. Music was by Vedha. It has an ensemble cast including Gemini Ganesan, Thangavelu, Manohar, Ashokan, Ramadas, Manimala and Manorama. The film was Modern Theatres' 100th film, and is a remake of the 1963 Hindi film Ustadon Ke Ustad.

Karaikal Arunachalam Thangavelu popularly known as "Danaal Thangavelu", was an Indian actor and comedian popular in the 1950s to 1970s. Not known for physical, acrobatic comedy like his contemporaries J. P. Chandrababu and Nagesh, Thangavelu's humour is recognised for his impeccable timing in verbal agility and the characteristic twang of his delivery. He exclusively acted in Tamil films.