Middlesex have given batsmen Andrew Balbirnie and Ryan Higgins their first full-time professional contracts.
Balbirnie, 22, has played four ODI matches for Ireland and previously held a summer contract with Middlesex whilst studying at Cardiff University.
Higgins, 18, is a product of the club's academy and has represented England at under-19 level.
"It is rewarding to sign up talent that we have developed," said Middlesex director of cricket Angus Fraser.
"Andrew and Ryan have been in Middlesex's system for quite some time. They are two exciting young cricketers and we are confident both are set for successful careers with Middlesex."