1954–55 Cardiff City F.C. season

The 1954–55 season was Cardiff City F.C.'s 28th season in the Football League. They competed in the 22-team Division One, then the first tier of English football, finishing twentieth.

FA Cup
Entering the competition in the third round, Cardiff were eliminated by fellow First Division side Arsenal after a 1–0 defeat.

Welsh Cup
After wins over Pembroke Borough and Newport County, Cardiff were knocked out of the competition in the semi-finals for a third year in a row after a 2–0 defeat to Chester City.