They have also competed in the EFL Trophy during the 2016–17, 2017–18 and 2018–19 seasons alongside 15 other academies that held Category 1 status.

[2] Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.

Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.

[10] Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.

The following are players who have made professional appearances, either for Middlesbrough or another football club, during their careers.