The KNVB Reserve Cup (Dutch: KNVB Beker voor beloften) is a cup competition for the reserve teams of professional football clubs in the Netherlands.
The winner qualifies for next year's KNVB Cup; if the cup winner is also the champion in the national competition for reserve teams (Dutch: Eredivisie voor beloften), the cup runner-up also qualifies for the KNVB Cup.
Until then, the teams played in the KNVB District Cup competitions, and competed for the KNVB Amateur Cup.
From the 1997-98 season to the 2000-01 season, the reserve teams used the number 2 to distinguish them from the club's main squad.
From 2001-02 onwards, the teams use the prefix Jong (Young).