The 11-day fest will open on September 8. The film will be screened in the special presentation section.
"Thrilled to be in such great company with our film A DEATH IN THE GUNJ!" Konkona, 36, tweeted.
The film is a coming-of-age story, which traces the journey of five individuals who are on a holiday.
It has an ensemble cast including Om Puri, Kalki Koechlin, Vikrant Massey, Gulshan Devaiah, Tanuja Mukherjee, Om Puri, Tillotama Shome, and Konkona's estranged husband Ranvir Shorey.