Liverpool F.C. Under 23s is the reserve & senior youth team of Liverpool F.C. It is the most senior level of the Liverpool academy beneath the first team. In the summer of 2012, the whole English reserve football system was overhauled and replaced with an Under 21 league system, the Professional Development League. Liverpool's reserve team became the Liverpool under 23 team and competes in the Professional Development League 1 which is also known by its sponsorship name of Barclays under 21 Premier League and Premier League 2. The team generally consists of Under-21 players at the club but at times senior players also play for the reserves when they are recuperating from injury. Following the introduction of new regulations from the 2012–13 season, only three outfield players and one goalkeeper over the age of 21 can play for the reserves regularly.

The Football Association Youth Challenge Cup is an English football competition run by The Football Association for under-18 sides. Only those players between the age of 15 and 18 on 31 August of the current season are eligible to take part. It is dominated by the youth sides of professional teams, mostly from the Premier League, but attracts over 400 entrants from throughout the country.