Crystal Palace Academy prospects Jake Grante, Jackson Izquierdo and Vonnte Williams have all signed pro contracts.
Goalkeeper Izquierdo arrived from Aldershot Town when 16, while defensive pair Grante and Williams were also regulars with the U18s last season.
Contract extensions have also been agreed for Scott Banks, Kofi Balmer, Malachi Boateng, Danny Imray, Fionn Mooney, Killian Phillips and Noah Watson.
Palace Academy Director Gary Issott said: These players have worked tirelessly to earn their first professional contracts and extensions.
It's a big day for them and their families, and is a huge reward for their efforts on and off the pitch during their time at the Academy and out on loan.
They now have an excellent opportunity to progress their careers and I look forward to seeing their continued development in the U18s, U21s sides."