The Italians have a combined 34 years of service under their belts for Juve, with Buffon having been there since 2001 (save for a year at PSG) and Chiellini having been a regular since 2005.
Their new contracts will take them to June 2021 when Buffon will be 43 and Chiellini 36.
Juventus announced the new deals on their website, with a statement reading:
“There are players who need no introduction. Champions whose story speaks for itself, and whose connection with the shirt they wear is indissoluble.
“Examples on the pitch and in the locker room, leaders, driving forces, bearers of the Bianconeri DNA, who wear it as a second skin.
“Gianluigi Buffon. Giorgio Chiellini. Captains, legends. Bianconeri since the beginning. Bianconeri forever. And to confirm it, in case there is a need, today their contract renewals have become official, for another: 2021!”
Neither Buffon nor Chiellini has played a significant role in the 2019/20 season, with the former playing understudy to Wojciech Szczesny and the latter having missed the majority of the campaign with injury, making just nine Serie A appearances between them.
Maurizio Sarri’s side currently lead the race for the Scudetto, four points clear of Lazio in second place.