| Season: | 1954–55 |
| Chairman: | John Morgan Sir Herbert Merrett[1] |
| League Result: | 20th |
| Cup1 Result: | 3rd round |
| Cup2 Result: | Semi-finals |
| Average Attendance: | 24,311 |
| Highest Attendance: | 39,448 v Preston, 25 August 1954 |
| Lowest Attendance: | 14,461 v Tottenham Hotspur, 26 March 1955 |
| League Topscorer: | Trevor Ford (19) |
| Season Topscorer: | Trevor Ford (24) |
| Pattern B1: | _whitecollarplain |
| Pattern Sh1: | _bluesides |
| Pattern So1: | _band_white |
| Body1: | 0000ff |
| Socks1: | 0000ff |
| Nextseason: | 1955–56 |
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.
Entering the competition in the third round, Cardiff were eliminated by fellow First Division side Arsenal after a 1–0 defeat.[2]
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.[3]