Scott Williams, Gareth Maule and Adam Warren have all signed on to stay at the Scarlets for next season.
Head coach, Simon Easterby said the three re-signings added to the Llanelli side's "strong foundation" in terms of "experience, quality and flair."
Williams said: "I am delighted to be staying at the Scarlets – I wouldn’t want to play my rugby anywhere else and it was important to me to be part of this rugby squad and region having grown-up with Scarlets rugby."
Pontypool-born Maule said: "It is really important to me to be part of the Scarlets going forward; there’s a great spirit and determination in this region and we’re a close-knit squad of players at Parc y Scarlets who are determined to achieve success."
Warren said: "The region invested in me and gave me opportunities when I stepped up to the senior squad in 2011, developing me as a player and I just want to push on now and stay competitive.”