Every competitive match Rotherham United played in 2004–05, in Championship — 49 matches, 6 won, 15 drawn, 28 lost, with scorers and attendances where the record holds them.
| Date | Competition | Venue | Opponent | Their season | Score | Scorers | Att |
|---|---|---|---|---|---|---|---|
| 7 Aug 2004 | Championship | A | Queens Park Rangers | Queens Park Rangers 2004–05 | 1–1 | Paul Shaw | 14,547 |
| 10 Aug 2004 | Championship | H | Burnley | Burnley 2004–05 | 0–0 | 6,243 | |
| 14 Aug 2004 | Championship | H | Stoke City | Stoke City 2004–05 | 1–1 | Paul Shaw | 5,925 |
| 21 Aug 2004 | Championship | A | Reading | Reading 2004–05 | 0–1 | 11,404 | |
| 24 Aug 2004 | League Cup | H | Chesterfield | Chesterfield 2004–05 | 2–1 | Michael Proctor, Shaun Barker | 3,845 |
| 28 Aug 2004 | Championship | H | Ipswich Town | Ipswich Town 2004–05 | 0–2 | 5,504 | |
| 30 Aug 2004 | Championship | A | Preston North End | Preston North End 2004–05 | 0–2 | 11,439 | |
| 11 Sep 2004 | Championship | H | Leicester City | Leicester City 2004–05 | 0–2 | 6,272 | |
| 14 Sep 2004 | Championship | A | West Ham United | West Ham United 2004–05 | 0–1 | 26,233 | |
| 18 Sep 2004 | Championship | A | Coventry City | Coventry City 2004–05 | 0–0 | 13,834 | |
| 22 Sep 2004 | League Cup | A | Nottingham Forest | Nottingham Forest 2004–05 | 1–1 | 11,168 | |
| 25 Sep 2004 | Championship | H | Millwall | Millwall 2004–05 | 1–1 | Chris Sedgwick | 5,062 |
| 28 Sep 2004 | Championship | H | Crewe Alexandra | Crewe Alexandra 2004–05 | 2–3 | Mark Burchill, Shaun Barker | 4,498 |
| 2 Oct 2004 | Championship | A | Wigan Athletic | Wigan Athletic 2004–05 | 0–2 | 7,937 | |
| 16 Oct 2004 | Championship | A | Cardiff City | Cardiff City 2004–05 | 0–2 | 11,004 | |
| 19 Oct 2004 | Championship | H | Plymouth Argyle | Plymouth Argyle 2004–05 | 0–1 | 5,088 | |
| 25 Oct 2004 | Championship | H | Sunderland | Sunderland 2004–05 | 0–1 | 6,026 | |
| 30 Oct 2004 | Championship | A | Derby County | Derby County 2004–05 | 2–3 | Chris Swailes, Rob Scott | 25,096 |
| 3 Nov 2004 | Championship | A | Nottingham Forest | Nottingham Forest 2004–05 | 2–2 | Chris Sedgwick, José Júnior | 21,619 |
| 6 Nov 2004 | Championship | H | Cardiff City | Cardiff City 2004–05 | 2–2 | Paul McLaren, Michael Proctor | 5,093 |
| 13 Nov 2004 | Championship | H | Wolverhampton Wanderers | Wolverhampton Wanderers 2004–05 | 1–2 | Martin McIntosh | 6,693 |
| 20 Nov 2004 | Championship | A | Watford | Watford 2004–05 | 0–0 | 17,780 | |
| 29 Nov 2004 | Championship | H | Leeds United | Leeds United 2004–05 | 1–0 | Martin McIntosh | 8,860 |
| 4 Dec 2004 | Championship | A | Brighton & Hove Albion | Brighton & Hove Albion 2004–05 | 0–1 | 6,076 | |
| 11 Dec 2004 | Championship | H | Sheffield United | Sheffield United 2004–05 | 2–2 | Chris Swailes, Martin McIntosh | 8,195 |
| 18 Dec 2004 | Championship | A | Gillingham | Gillingham 2004–05 | 1–3 | Will Hoskins | 8,576 |
| 26 Dec 2004 | Championship | A | Leicester City | Leicester City 2004–05 | 1–0 | Shaun Barker | 27,014 |
| 28 Dec 2004 | Championship | H | West Ham United | West Ham United 2004–05 | 2–2 | Martin Butler, Martin McIntosh | 7,769 |
| 1 Jan 2005 | Championship | H | Coventry City | Coventry City 2004–05 | 1–2 | José Júnior | 5,742 |
| 3 Jan 2005 | Championship | A | Millwall | Millwall 2004–05 | 2–1 | Martin Butler, Rob Scott | 11,725 |
| 8 Jan 2005 | FA Cup | H | Yeovil Town | 0–3 | 5,397 | ||
| 15 Jan 2005 | Championship | H | Wigan Athletic | Wigan Athletic 2004–05 | 0–2 | 9,050 | |
| 22 Jan 2005 | Championship | A | Crewe Alexandra | Crewe Alexandra 2004–05 | 1–1 | John Mullin | 6,382 |
| 5 Feb 2005 | Championship | H | Nottingham Forest | Nottingham Forest 2004–05 | 0–0 | 8,448 | |
| 12 Feb 2005 | Championship | A | Plymouth Argyle | Plymouth Argyle 2004–05 | 1–1 | Andy Monkhouse | 14,798 |
| 19 Feb 2005 | Championship | H | Derby County | Derby County 2004–05 | 1–3 | Martin Butler | 7,937 |
| 22 Feb 2005 | Championship | A | Sunderland | Sunderland 2004–05 | 1–4 | Andy Monkhouse | 22,267 |
| 26 Feb 2005 | Championship | A | Sheffield United | Sheffield United 2004–05 | 0–1 | 18,431 | |
| 5 Mar 2005 | Championship | H | Gillingham | Gillingham 2004–05 | 1–3 | Martin Butler | 4,367 |
| 12 Mar 2005 | Championship | A | Burnley | Burnley 2004–05 | 1–2 | Phil Gilchrist | 10,539 |
| 15 Mar 2005 | Championship | H | Reading | Reading 2004–05 | 1–0 | Paul Warne | 3,804 |
| 19 Mar 2005 | Championship | H | Queens Park Rangers | Queens Park Rangers 2004–05 | 0–1 | 5,387 | |
| 2 Apr 2005 | Championship | A | Stoke City | Stoke City 2004–05 | 2–1 | Martin Butler, Gifton Noel-Williams | 16,552 |
| 5 Apr 2005 | Championship | A | Ipswich Town | Ipswich Town 2004–05 | 3–4 | Tony Thorpe, Martin Butler, Martin McIntosh | 26,017 |
| 9 Apr 2005 | Championship | H | Preston North End | Preston North End 2004–05 | 1–2 | Will Hoskins | 6,312 |
| 16 Apr 2005 | Championship | H | Watford | Watford 2004–05 | 0–1 | 5,438 | |
| 23 Apr 2005 | Championship | A | Wolverhampton Wanderers | Wolverhampton Wanderers 2004–05 | 0–2 | 25,177 | |
| 30 Apr 2005 | Championship | H | Brighton & Hove Albion | Brighton & Hove Albion 2004–05 | 0–1 | 6,549 | |
| 8 May 2005 | Championship | A | Leeds United | Leeds United 2004–05 | 0–0 | 30,900 |
37 of the goals in this season carry a named scorer.
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