K. R. Seetharama Sastry (Kannada: ಕು. ರಾ. ಸೀತಾರಾಮ ಶಾಸ್ತ್ರಿ) popularly known as Ku. Ra. Seetharama Sastry or simply Ku. Ra. Si was an Indian theatre actor, film actor, writer, lyricist and director in Kannada film industry. After a career in theatre, Sastry's career in films was those of an actor, director, producer, screenwriter, lyricist and an occasional composer. He is considered one of the most influential personalities in the history of Kannada cinema.