Agent Sai Srinivasa Athreya is a 2019 Indian Telugu-language comedy mystery film directed by Swaroop R. S. J., who co-wrote the film with Naveen Polishetty. The film stars Polishetty as the title character alongside Shruti Sharma in her Telugu debut. It follows a Nellore-based detective whose life runs into danger when he starts investigating the case of a dead body abandoned near a railway track.

The film was released theatrically on 21 June 2019 and received critical acclaim from the critics, where it became a commercial success at the box office. The film won three awards at Zee Cine Awards Telugu. It was remade in Tamil as Agent Kannayiram (2022).