Fast bowlers James Taylor and Alfie Gleadall have left Derbyshire.
Taylor, 18, played in two first-class matches for Derbyshire and claimed seven wickets at an average of 21.57, with best figures of 3-26 against Leeds/Bradford MCCU.
He also featured in one List A fixture for Derbyshire against Australia A at The Pattonair County Ground, claiming 2-66.
Gleadall made two first-class appearances for Derbyshire and claimed one wicket, while the 19-year-old also took three wickets in as many List A matches.
Head of Cricket, Dave Houghton said: “James and Alfie are good young bowlers, but unfortunately they have not been able to challenge for first-team places on a regular enough basis, both physically and technically.
“I’d like to take this opportunity to wish them both well for the future.”