1930–31 FA Cup Fourth Round Proper Fourth Round Proper

| Tie_no | Home_team | Score | Away_team | Date_ |
|---|---|---|---|---|
| 1 | Birmingham | 2–0 | Port Vale | 24 January 1931 |
| 2 | Bury | 1–2 | Exeter City | 24 January 1931 |
| 3 | Watford | 2–0 | Brighton & Hove Albion | 24 January 1931 |
| 4 | Blackburn Rovers | 5–1 | Bristol Rovers | 24 January 1931 |
| 5 | Bolton Wanderers | 1–1 | Sunderland | 24 January 1931 |
| Replay | Sunderland | 3–1 | Bolton Wanderers | 28 January 1931 |
| 6 | Grimsby Town | 1–0 | Manchester United | 24 January 1931 |
| 7 | West Bromwich Albion | 1–0 | Tottenham Hotspur | 24 January 1931 |
| 8 | Sheffield United | 4–1 | Notts County | 24 January 1931 |
| 9 | Barnsley | 2–1 | Sheffield Wednesday | 24 January 1931 |
| 10 | Brentford | 0–1 | Portsmouth | 24 January 1931 |