1979–80 FA Cup Fourth round proper Fourth round proper

| Tie_no | Home_team | Score | Away_team | Date_ |
|---|---|---|---|---|
| Replay | Tottenham Hotspur | 2–1 | Swindon Town | 30 January 1980 |
| 11 | Carlisle United | 0–0 | Wrexham | 26 January 1980 |
| Replay | Wrexham | 3–1 | Carlisle United | 29 January 1980 |
| 12 | Arsenal | 2–0 | Brighton & Hove Albion | 26 January 1980 |
| 13 | Birmingham City | 2–1 | Middlesbrough | 26 January 1980 |
| 14 | Cambridge United | 1–1 | Aston Villa | 26 January 1980 |
| Replay | Aston Villa | 4–1 | Cambridge United | 30 January 1980 |
| 15 | Orient | 2–3 | West Ham United | 26 January 1980 |
| 16 | Swansea City | 4–1 | Reading | 26 January 1980 |