C.B.I. Shankar (Kannada: ಸಿ.ಬಿ.ಐ.ಶಂಕರ್) is a 1989 Indian Kannada language drama film directed by P. Nanjundappa. It stars Shankar Nag in the titular role as Shankar, an officer with the CBI, who investigates a murder case closed down by the local police. The supporting cast features Devaraj, Doddanna, Vajramuni, Suman Ranganathan and Shashikumar. The film was a commercial success and further established Nag as a leading actor in Kannada cinema.