England pair Tom Youngs and Dan Cole and Argentina prop Marcos Ayerza have agreed new long-term contracts with Leicester.
The front-row trio have made over 400 appearances for the club between them.
Leicester Tigers director of rugby Richard Cockerill told the club’s website: "It is great news for us that Marcos, Tom and Dan have all agreed new contracts with the club.
They are all genuine world-class players in key positions in the team and they are important parts of the senior core to the squad.
Hooker Youngs, 27, made his Tigers debut as a centre in 2006 but since then has re-invented himself as a No 2.
Leicester local Cole, also 27, made his debut in 2007 and has won three Aviva Premiership title wins with the Tigers as well as gaining 45 England caps.
Both Cole and Youngs played for the British & Irish Lions in their series victory in Australia in 2013.
Argentina star Ayerza, 31, moved to Welford Road in 2006 and has become one of the world’s leading props.
Tom and Dan know all about the club, coming through the academy here to establish themselves in the first-team squad, and Leicester has been home to Marcos for the last eight years," added Cockerill.
They were all very keen to stay and we were very keen to keep them here for the long term, so I'm delighted we have come to an agreement.
We have a good crop of front-rowers who work well together and they help to get the best out of each other. Marcos, Tom and Dan, with their attitude to training and playing, and their experience at the top levels of the game, play a massive role in that.