Lancashire have tied three of their academy graduates down to the new contracts.
All-rounders Jordan Clark and Arron Lilley, as well as batsman Liam Livingstone, have all agreed to extend their existing deals at Old Trafford.
"Arron, Liam and Jordan very much represent the next generation for LCCC and I'm delighted that we have been able to secure their immediate futures," head coach Ashley Giles told the club's official website.
The length of the new deals have not been disclosed.
