K. Kunju Nair (1889 – 1984) was an Indian actor, singer and music composer in Malayalam cinema.
There were 23 songs in Balan, all of which composed by Ibrahim and K.K.Aroor and written by Muthukulam Raghavan Pillai.
He later joined the Harikatha Kalakshepam drama troupe.
In 1973, P. A. Thomas gave him a small role in his film Kudumbini, after which he retired from cinema.
Struggling financially, he worked as a server in a tea shop during the last days of his life.