Utility back Tim Nanai-Williams and forward Taleni Seu are the latest players to confirm their futures with the Chiefs.
Nanai-Williams, 27, has signed a one-year deal for 2018, while 23-year-old Seu has committed to the Chiefs for another two years, through 2019.
"I'm really pleased to have Tim and Taleni locked in for next season," says Colin Cooper, who will succeed Dave Rennie as Chiefs head coach from 2018.
"Tim brings a huge amount of experience, which makes him a real asset on-field and also as a mentor for our younger players coming through. He's a versatile player, who is able to cover most positions in the backline, plus he's calm under pressure and gives the team continuity going forward.
"Taleni is an explosive, exciting player with a lot of x-factor. He's a big man, who can play a number of positions, covering lock and loose-forward, and he's very quick.
"Being in just his second year of Super Rugby, I'm excited to see him fulfill his potential in the coming years."
Nanai-Williams said: "I'm really excited to sign with the Chiefs for 2018. This team has been a big part of my life over the past eight years, so I was very keen to stay on for another season and be involved in the next era of the Chiefs with Coops.
"For my young family, it's great to give them some stability for the next 12 months and to keep challenging myself in an outstanding environment."