The 2018–19 season was Újpest Football Club's 138th competitive season, 127nd consecutive season in the OTP Bank Liga and 126th year in existence as a football club.

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

Players may hold more than one non-FIFA nationality.

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

Players may hold more than one non-FIFA nationality.