Global United Media, the company that distributed "Baahubali" in Kerala, was behind the idea of creating the poster, which was designed by Rajamouli himself.
According to the Guinness website, the poster sized 51,598.21 square feet surpassed the previous record of 50687.25 square feet.
"You don't get to do things like these every day and a big thank you to the entire team to make this wonderful event happen. A special thanks to producers Shobu Yarlagadda, Devineni Prasad and director Rajamouli," Global United Media managing director Prem Menon told IANS.
A team of 30 members worked round the clock for three days to complete the poster.
"Baahubali", which is about two brothers at war for an ancient kingdom, has so far grossed over Rs.350 crore worldwide.