Singanalluru Puttaswamayya Varadaraj (also known as S. P. Varadappa,[a] 1935 – 8 February 2006) was an Indian actor and producer in Kannada cinema.

[2][3] He was born at Gajanur – situated in the Karnataka–Tamil Nadu border – to Singanalluru Puttaswamayya, a theatre-artist, and Lakshmamma as a third child; Rajkumar, a Kannada film icon, is his elder brother while Sharadamma and Nagamma) are his sisters.

[4] He began his career as an actor part of Gubbi company (drama troupe) along with his father, elder brother – S.P.

[1][5][6] Varadappa[Varadaraj], after the success of Bedara Kannappa – starring Rajkumar – he stood behind his brother and his family when they settled in Chennai – then Madras; He remained a most trusted guide and friend to Rajkumar to the extent of his involvement in selection of stories for home productions – Vajreshwari Combines.

It is believed that without the efforts of Varadappa, Kannada filmdom would have missed out a great actor – Rajkumar.