List of leagues and cups where team West Ham United plays this season.
| England - Premier League 2020/2021 |
| 03.5. 2021 | Burnley | 1:2 | West Ham United | | |
| 24.4. 2021 | West Ham United | 0:1 | Chelsea | | |
| 17.4. 2021 | Newcastle United | 3:2 | West Ham United | | |
| 11.4. 2021 | West Ham United | 3:2 | Leicester City | | |
| 05.4. 2021 | Wolverhampton Wanderers | 2:3 | West Ham United | | |
| 21.3. 2021 | West Ham United | 3:3 | Arsenal | | |
| 14.3. 2021 | Manchester United | 1:0 | West Ham United | | |
| 08.3. 2021 | West Ham United | 2:0 | Leeds United | | |
| 27.2. 2021 | Manchester City | 2:1 | West Ham United | | |
| 21.2. 2021 | West Ham United | 2:1 | Tottenham Hotspur | | |
| 15.2. 2021 | West Ham United | 3:0 | Sheffield United | | |
| England - FA Cup 2020/2021 |
| 09.2. 2021 | Manchester United | 1:0 | West Ham United | | |
| England - Premier League 2020/2021 |
| 06.2. 2021 | Fulham | 0:0 | West Ham United | | |
| 03.2. 2021 | Aston Villa | 1:3 | West Ham United | | |
| 31.1. 2021 | West Ham United | 1:3 | Liverpool | | |
| 26.1. 2021 | Crystal Palace | 2:3 | West Ham United | | |
| England - FA Cup 2020/2021 |
| 23.1. 2021 | West Ham United | 4:0 | Doncaster Rovers | | |
| England - Premier League 2020/2021 |
| 19.1. 2021 | West Ham United | 2:1 | West Bromwich Albion | | |
| 16.1. 2021 | West Ham United | 1:0 | Burnley | | |
| England - FA Cup 2020/2021 |
| 11.1. 2021 | Stockport County | 0:1 | West Ham United | | |
| England - Premier League 2020/2021 |
| 01.1. 2021 | Everton | 0:1 | West Ham United | | |
| 29.12. 2020 | Southampton | 0:0 | West Ham United | | |
| 27.12. 2020 | West Ham United | 2:2 | Brighton & Hove Albion | | |
| 21.12. 2020 | Chelsea | 3:0 | West Ham United | | |
| 16.12. 2020 | West Ham United | 1:1 | Crystal Palace | | |
| 11.12. 2020 | Leeds United | 1:2 | West Ham United | | |
| 05.12. 2020 | West Ham United | 1:3 | Manchester United | | |
| 30.11. 2020 | West Ham United | 2:1 | Aston Villa | | |
| 22.11. 2020 | Sheffield United | 0:1 | West Ham United | | |
| 07.11. 2020 | West Ham United | 1:0 | Fulham | | |
| 31.10. 2020 | Liverpool | 2:1 | West Ham United | | |
| 24.10. 2020 | West Ham United | 1:1 | Manchester City | | |
| 18.10. 2020 | Tottenham Hotspur | 3:3 | West Ham United | | |
| 04.10. 2020 | Leicester City | 0:3 | West Ham United | | |
| England - EFL Cup 2020/2021 |
| 30.9. 2020 | Everton | 4:1 | West Ham United | | |
| England - Premier League 2020/2021 |
| 27.9. 2020 | West Ham United | 4:0 | Wolverhampton Wanderers | | |
| England - EFL Cup 2020/2021 |
| 22.9. 2020 | West Ham United | 5:1 | Hull City | | |
| England - Premier League 2020/2021 |
| 19.9. 2020 | Arsenal | 2:1 | West Ham United | | |
| England - EFL Cup 2020/2021 |
| 15.9. 2020 | West Ham United | 3:0 | Charlton Athletic | | |
| England - Premier League 2020/2021 |
| 12.9. 2020 | West Ham United | 0:2 | Newcastle United | | |
| International - Club Friendlies 2020 |
| 05.9. 2020 | West Ham United | 3:5 | AFC Bournemouth | | |
| 29.8. 2020 | West Ham United | 2:1 | Brentford | | |
| 25.8. 2020 | Ipswich Town | 1:4 | West Ham United | | |
| 25.8. 2020 | Wycombe Wanderers | 1:5 | West Ham United | | |
| England - Premier League 2019/2020 |
| 26.7. 2020 | West Ham United | 1:1 | Aston Villa | | |
| 22.7. 2020 | Manchester United | 1:1 | West Ham United | | |
| 17.7. 2020 | West Ham United | 3:1 | Watford | | |
| 11.7. 2020 | Norwich City | 0:4 | West Ham United | | |
| 08.7. 2020 | West Ham United | 0:1 | Burnley | | |
| 05.7. 2020 | Newcastle United | 2:2 | West Ham United | | |
| 01.7. 2020 | West Ham United | 3:2 | Chelsea | | |
| 23.6. 2020 | Tottenham Hotspur | 2:0 | West Ham United | | |
| 20.6. 2020 | West Ham United | 0:2 | Wolverhampton Wanderers | | |
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