The news comes as a welcome boost for the region’s supporters ahead of the next round of European clashes, against current Guinness PRO12 champions Glasgow Warriors, and the festive derbies against Ospreys and Cardiff Blues.
Williams, 25, who has made a name for himself in recent years as a formidable force in Scarlets and Wales’ backline, and will remain at the Scarlets until at least 2018.
A knee injury, suffered in Wales’ Rugby World Cup victory over England, means Williams has been forced to watch his side top the Guinness PRO12 table from the sidelines but his signature was a vital one for the region to secure as part of Scarlets’ on-going recruitment policy.
Williams forms an exciting part of the region’s strong pool of talent at centre, with Jonathan Davies also making a return to West Wales in the summer.
Since making his debut in 2010, against the Ospreys, Williams has scored 16 tries in 93 appearances for the Scarlets.
Commenting on the news Scarlets Head Coach Wayne Pivac said: “Scott is a fantastic guy and is a Scarlet through and through.
“It is disappointing that he’s currently out with an injury but securing Scott’s signature, and keeping him here at the Scarlets, was important for our continued development over the next few years. Having him and Jonathan Davies in the centre next season is going to be very exciting.”
Speaking about the news Williams said: “I’m delighted to have signed a contract extension with the Scarlets. I have always been a big supporter of the club and it is exciting to know that I will be able to continue my development here at the region.
“There’s a great atmosphere at the Parc and there’s a real sense that there are exciting times on the horizon and I’m looking forward to being a part of that on the field once I return from injury.
“Continuing with my rugby development in Wales was vitally important to me to continue with my international aspirations. I’d like to thank the Scarlets board and backroom staff who have been supportive throughout the negotiations.”
Williams joins a strong pool of players already signed up for the 2016-17 season at Parc y Scarlets. Captain Ken Owens leads an impressive group of players who have committed their futures to Scarlets Rugby including Jake Ball, John Barclay, Aled Davies, James Davies, Rob Evans, Samson Lee, Aaron Shingler, Liam Williams and Jonathan Davies.
Williams commits future to Scarlets
Wales centre Scott Williams has signed a new deal that sees him extend his stay in West Wales with the Scarlets.