The two-minute-31-second clip with a dark and intense tone features Aishwarya in the role of a lawyer racing against time to save her daughter.
Irrfan Khan, who is working for the first time with 41-year-old actress, will essay the role of a cool cop, mouthing cheeky one liners.
Director Sanjay Gupta shared the trailer on his Twitter account after series of unedited pictures from the sets.
“H E R E I T IS… J A Z B A A Theatrical Trailer. bit.ly/trailerjazbaa #JazbaaTrailer,” he wrote.
Aishwarya is making her Bollywood comeback after a gap of five years. She was last seen in Sanjay Leela Bhansali’s “Guzaarish” (2010).
Her actor husband Abhishek Bachchan and close friend Karan Johar were among others to post the link on the micro-blogging site.
“Garma garmi shuru….. @JazbaaFilm http://m.youtube.com/watch?feature=youtu.be&v=nx7z1enCLWs…, ” Irrfan tweeted the link.
Also featuring veteran actress Shabana Azmi and Jackie Shroff in pivotal roles, “Jazbaa” is set to hit theatres on October 9.