Gloucester centre Mark Atkinson and winger David Halaifonua have signed new contracts with the Premiership club.
Tonga international Halaifonua, 28, has scored one try in 12 games since signing from Bergerac in November 2014.
Atkinson, 26, joined Gloucester from Bedford in March 2014 and has made 35 appearances for the club.
"Both Mark and David have proved to be hugely valuable members of our squad," director of rugby David Humphreys told the club website.
"The coaching team are really impressed with their work rate both on and off the field, and we are challenging them now to go to the next level."
Details of the lengths of their contract extensions have not been disclosed.