| Competition: | Football League Championship |
| Season: | 2004–05 |
| Winners: | Sunderland 1st Championship title 4th 2nd tier title |
| Promoted: | Sunderland Wigan Athletic West Ham United |
| Relegated: | Gillingham Nottingham Forest Rotherham United |
| Prevseason: | 2003–04 First Division |
| Nextseason: | 2005–06 |
The 2004–05 Football League Championship (known as the Coca-Cola Championship for sponsorship reasons) was the thirteenth season under its current league division format. It began in August 2004 and concluded in May 2005, with the promotion play-off finals. This was the first season to feature the rebranded Football League. The First Division, Second Division and Third Division were renamed the Football League Championship, Football League One and Football League Two respectively. Coca-Cola replaced the Nationwide Building Society as title sponsor.
The winners of the Championship in 2005 are Sunderland. Wigan Athletic reached the Premiership as Championship runners-up and became the first club to make a debut in the top tier of English football since Barnsley's promotion after the 1996–97 season. They had been elected to the Football League only 27 years earlier, had been the league's fourth lowest club eleven years earlier and had never played in the upper half of The Football League until two years before reaching the Premier League. Nottingham Forest were relegated from the Championship to League One, becoming the first former European Cup winners to slide into the third tier of their domestic league – having won two straight European Cups a quarter of a century earlier. Just ten years ago they had finished third in the Premiership and reached the following season's UEFA Cup quarter finals.
Promoted to Premier League
Relegated to League One
Relegated from Premier League
Promoted from League One
| Team | Stadium | Capacity | |
|---|---|---|---|
| 49,000 | |||
| 37,697 | |||
| 35,146 | |||
| 33,597 | |||
| 32,609 | |||
| 32,500 | |||
| 30,602 | |||
| 30,311 | |||
| 28,525 | |||
| 28,000 | |||
| 25,138 | |||
| 24,500 | |||
| 24,161 | |||
| 23,489 | |||
| 22,546 | |||
| 22,008 | |||
| 20,146 | |||
| 19,920 | |||
| 19,500 | |||
| 19,128 | |||
| 11,582 | |||
| 10,046 | |||
| 8,850 | |||
| 8,300 |