Singanalluru Puttaswamayya Varadaraj (also known as S. P. Varadappa, 1935 – 8 February 2006) was an Indian actor and producer in Kannada cinema. He produced films such as Bhootayyana Maga Ayyu starring Lokesh, and Hemavathi starring Udaykumar. He was an architect in shaping up Sri Vajreshwari Combines, one of the most successful banners in the Kannada film industry, under which his sister-in-law Parvathamma Rajkumar produced films starring his brother Rajkumar, and his sons Shiv RajKumar, Raghavendra Rajkumar, and Puneeth Rajkumar.