The 1984–85 season was Cardiff City F.C.
They competed in the 22-team Division Two, then the second tier of English football, finishing twenty-first, suffering relegation to Division Three.
The season also saw the retirement of Phil Dwyer, whose 13-year spell at the club saw him become the record appearance holder.
Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.
Players may hold more than one non-FIFA nationality.