Narasimhan (c. 1936 - 12 March 2009), popularly known as Omakuchi, was an Indian stage and film actor.

On completion of his graduation, Narasimhan worked for the Life Insurance Corporation of India (LIC) for some time before re-entering the Tamil movie industry with Gowri Kalyanam.

[citation needed] He got the support of actor Suruli Rajan, director Visu, during his early part of his career.

He played a vital role in guiding the famous director Shankar in his early stage who he met during their stint in Thillairajan's drama troupe.

He got the prefix "Omakuchi" from a character he played in the same troupe—a Karate master named after Gōgen Yamaguchi.