Head to Head
| England Championship | 2021/02/27 15:00 | Barnsley v Millwall | W | 2-1 |
| England Championship | 2020/10/24 14:00 | Millwall v Barnsley | D | 1-1 |
| England Championship | 2020/06/27 12:00 | Barnsley v Millwall | D | 0-0 |
| England Championship | 2019/12/21 15:00 | Millwall v Barnsley | W | 1-2 |
| England Championship | 2018/03/17 13:00 | Barnsley v Millwall | L | 0-2 |
| England FA Cup | 2018/01/06 15:00 | Millwall v Barnsley | L | 4-1 |
| England Championship | 2017/09/30 14:00 | Millwall v Barnsley | W | 1-3 |
| England League 1 | 2016/05/29 14:00 | Barnsley v Millwall | W | 3-1 |
Home History
| Club Friendly List | 2021/07/17 11:00 | Barnsley v Sheff Wed | W | 2-0 |
| England Championship | 2021/05/22 17:30 | Swansea v Barnsley | D | 1-1 |
| England Championship | 2021/05/17 19:15 | Barnsley v Swansea | L | 0-1 |
| England Championship | 2021/05/08 11:30 | Barnsley v Norwich | D | 2-2 |
| England Championship | 2021/05/01 14:00 | Preston v Barnsley | L | 2-0 |
| England Championship | 2021/04/24 14:00 | Barnsley v Rotherham | W | 1-0 |
| England Championship | 2021/04/21 18:45 | Huddersfield v Barnsley | W | 0-1 |
| England Championship | 2021/04/18 14:00 | Coventry v Barnsley | L | 2-0 |
Away History
| England Championship | 2021/05/08 11:30 | Coventry v Millwall | L | 6-1 |
| England Championship | 2021/05/01 14:00 | Millwall v Bristol City | W | 4-1 |
| England Championship | 2021/04/24 14:00 | Watford v Millwall | L | 1-0 |
| England Championship | 2021/04/21 17:00 | Millwall v Bournemouth | L | 1-4 |
| England Championship | 2021/04/17 11:30 | Brentford v Millwall | D | 0-0 |
| England Championship | 2021/04/10 11:30 | Millwall v Swansea | L | 0-3 |
| England Championship | 2021/04/05 14:00 | Stoke v Millwall | W | 1-2 |
| England Championship | 2021/04/02 14:00 | Millwall v Rotherham | W | 1-0 |