Front-row forwards Harry Thacker, Riccardo Brugnara and Tiziano Pasquali have all agreed new deals with Leicester Tigers.
Hooker Thacker, 20, and props Brugnara, 21, and Pasquali, 20, have all been involved with the first team this term and will stay for next season at least.
Director of rugby Richard Cockerill said: "They have all come through our academy and development squad.
"They are all good players and are learning their trade in good company."
Thacker, who is also a member of the England Under-20 squad, has scored three tries in four senior appearances for Tigers.
Italian-born Brugnara and Pasquali were part of the club's development group last season before stepping up to the senior squad for 2014/15.