Mithun Chakraborty's unique role of Kishnan Iyer was inspired by one of his room mates of his struggling days, before he become a popular film star. In his struggling days Mithun used to be be room sharing with Devio who used to pay rs 150 while Mithun Used to pay rs 75. Devio had the a bed while Mithun used to sleep on the floor, one specific time Mithun used his bed whilst he was at work and when Devio came back he scolded Mithun. This incident remained with Mithun and he put Devio's character on screen.
There was a bedroom scene in the original script after Amitabh has an argument with his mother he goes to Madhavi for comfort. Amitabh Bachchan didn't feel comfortable about it and when he asked the director to alter the scene it was removed.
Amitabh Bachchan celebrated two events on April 8, 1991 at Go Bananas, Santacruz (Mumbai). The first occasion was to celebrate the actor bagging the National Award for Agneepath (1990) and the second was Jaya Bhaduri's (his wife) birthday at the stroke of midnight.
Though Deepak Shirke, Avtar Gill, Danny are older in the film then Bachchan, in reality all are either of same age to him or are younger. Amitabh Bachchan's mother played by Rohini is actually much younger to him in real life.
"La Belle Et La Bête/(1975) : La Belle Et La Bête (3:25)" by Jean Michel Jarre & Gerard Lenorman was the original source of the Agneepath theme (backgound music).Years later the songs composer Jean Michel Jarre, sampled his own song and created,"Second Rendez-Vous". This is the song Agneepath used in the film.
Amitabh Bachchan and Danny Denzongpa were cast alongside for the first time in their careers. They both started at almost the same time but despite many offers such as Sholay (1975), Coolie (1983) etc they never managed to act in the same movie until this one.
"You Belong to the City" by Choc Choc Zoo and Inusa Dawuda was a cover version of Glenn Frey song "You Belong to the City". This is the same song's saxophone part that was sampled for Danny's background music.
"You Belong to the City" by The Original Movies Orchestra was a cover version of Glenn Frey song "You Belong to the City". This is the same song's saxophone that was sampled for Danny's background music.