1984–85 Colchester United F.C. season
| 1984–85 season | ||
|---|---|---|
| Chairman | Maurice Cadman | |
| Manager | Cyril Lea | |
| Stadium | Layer Road | |
| Fourth Division | 7th | |
| FA Cup | 2nd round (eliminated by Gillingham) | |
| League Cup | 1st round (eliminated by Gillingham) | |
| Associate Members' Cup | 2nd round (southern section) (eliminated by Walsall | |
| Top goalscorer | League: Tony Adcock (24) All: Tony Adcock (28) | |
| Highest home attendance | 4,487 v Gillingham, 8 December 1984 | |
| Lowest home attendance | 1,641 v Aldershot, 22 September 1984 | |
| Average home league attendance | 2,225 | |
| Biggest win | 5–1 v Exeter City, 23 March 1985 | |
| Biggest defeat | 0–5 v Gillingham, 8 December 1984 | |
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The 1984–85 season was Colchester United's 43rd season in their history and fourth consecutive season in fourth tier of English football, the Fourth Division. Alongside competing in the Fourth Division, the club also participated in the FA Cup, the League Cup and the Associate Members' Cup.
Once again, Colchester finished high in the Fourth Division table, but ten points off promotion. Remarkably, the U's were paired against Gillingham in all three cup competitions they participated in, but only succeeded in beating them once, failing to defeat them in the first round of the League Cup and second round of the FA Cup, but won over two legs in the Associate Members' Cup.