Miles Benjamin, David Mele, Adam Thompstone and Jordan Crane have all signed contract extensions with Leicester Tigers.
However, the club has not disclosed the length of their respective deals.
"I'm happy those guys have re-signed, and that we can keep building," director of rugby Richard Cockerill told BBC Sport.
"We have a good squad and we would like to keep our continuity as best we can."
Leicester return to Aviva Premiership action on Friday when they travel to bottom-placed Worcester Warriors.
