Aa Dinagalu (transl. Those Days) is a 2007 Indian Kannada-language crime drama film based on the non-fiction novel Daadaagiriya Dinagalu by Agni Shridhar, and directed by K. M. Chaitanya. It stars Chethan Kumar in the lead role. The supporting cast features Sharath Lohitashwa, Ashish Vidhyarthi, Atul Kulkarni and Veda Sastry. The plot revolves around mafia in Bangalore during the 1980s when gangsters Kotwal Ramachandra and M. P. Jayaraj dominated the Bangalore underworld. The film's soundtrack and background music was scored by Ilayaraja.

Upon theatrical release on 19 October 2007, the film received positive reviews from critics who acclaimed the screenplay and the acting performance of Sharath Lohitashwa who portrayed the role of Kotwal Ramachandra. The film won three awards each at the 2007–08 Karnataka State Film Awards and 55th Filmfare Awards South; the awards at the latter ceremony being Best Film, Best Director (K. M. Chaitanya) and Best Supporting Actor (Sharath Lohitashwa).