1990–91 FA Cup Fourth Round Proper Fourth Round Proper

| Tie_no | Home_team | Score | Away_team | Date_ |
|---|---|---|---|---|
| 1 | Liverpool | 2–2 | Brighton & Hove Albion | 26/01/1991 |
| Replay | Brighton & Hove Albion | 2–3 | Liverpool | 30/01/1991 |
| 2 | Notts County | 2–0 | Oldham Athletic | 26/01/1991 |
| 3 | Crewe Alexandra | 1–0 | Rotherham United | 26/01/1991 |
| 4 | Luton Town | 1–1 | West Ham United | 26/01/1991 |
| Replay | West Ham United | 5–0 | Luton Town | 30/01/1991 |
| 5 | Woking | 0–1 | Everton | 27/01/1991 |
| 6 | Shrewsbury Town | 1–0 | Wimbledon | 26/01/1991 |
| 7 | Newcastle United | 2–2 | Nottingham Forest | 13/02/1991 |
| Replay | Nottingham Forest | 3–0 | Newcastle United | 18/02/1991 |
| 8 | Tottenham Hotspur | 4–2 | Oxford United | 26/01/1991 |
| 9 | Coventry City | 1–1 | Southampton | 26/01/1991 |
| Replay | Southampton | 2–0 | Coventry City | 29/01/1991 |
| 10 | Portsmouth | 5–1 | Bournemouth | 26/01/1991 |