Chelsea F.C. Development Squad are the development team of Chelsea Football Club. They play in the Premier League 2, which is the top level of reserve football in England. They were the champions in the 2013–14 and 2019–20 seasons. The team mainly consists of under-21 players at the club, although senior players occasionally feature, when recovering from injuries or otherwise not in the first team. The under-21 team is managed by Mark Robinson and the under-18 team is managed by Ed Brand.

Chelsea F.C. Academy is the under-18 team of Chelsea Football Club. It is a member of the Professional U18 Development League. They have won the FA Youth Cup nine times, including five consecutive titles between 2014 and 2018. The academy has produced many successful players such as the brothers Ron and Allan Harris, Peter Bonetti, Bobby Tambling, Barry Bridges, Bert Murray, John Hollins, Peter Osgood, Ray Wilkins, Graeme Le Saux, Bobby Smith, Terry Venables, Jimmy Greaves, John Terry, Mason Mount, and Reece James. Chelsea are the only English club to reach the final of the UEFA Youth League, winning it twice in four final appearances.

Neil Bath, who is the Head of Youth Development, is responsible for the day-to-day operation of the academy.

Until the 2019–20 season, the development team played their home games at Aldershot Town's Recreation Ground. The under-18 team play their home games at the club's Cobham Training Centre in Cobham, Surrey. Both teams occasionally use the club's home ground Stamford Bridge for important matches.