Yaar Paiyyan is a 1957 Indian Tamil-language children's comedy film directed by T. R. Raghunath and written by Sridhar. A remake of the Bengali film Chheley Kaar (1954), it stars Gemini Ganesan, K. Savitri, N. S. Krishnan, T. A. Mathuram and Daisy Irani. The film revolves around the efforts of a destitute boy to find his parents. Yaar Paiyyan was released on 26 July 1957 and emerged a success.

Plot

Poori, a young boy, does not know who his parents are, and has been looking relentlessly for them. While sitting on a park bench, Poori asks the man seated beside him his name. When the man introduces himself as Sundararajan, Poori declares that he is his father. This affects Sundararajan's life, even derailing his plans of marrying Latha, his lover. The president of a mental hospital with a mentally-imbalanced daughter creates more trouble for Sundararajan. Ultimately, the truth about Poori's parentage is revealed: he is the illegitimate son of Kumar, a soldier, and the abandoned mother committed suicide, leaving Poori destitute. Attracted to Poori, Sundararajan and Latha decide to adopt him as their own son.