2004–05 Premiership Rugby
| 2004–2005 Zurich Premiership | |
|---|---|
| Countries | England |
| Champions | London Wasps (5th title) |
| Runners-up | Leicester Tigers |
| Relegated | Harlequins |
| Matches played | 137 |
| Attendance | 1,481,355 (average 10,813 per match) |
| Top point scorer | Andy Goode (268) |
| Top try scorer | Tom Voyce (12) |
The 2004–05 Zurich Premiership was the 18th season of the top flight of the English domestic rugby union competitions.
For the first time, two of the opening games of the season were played at Twickenham, in the 2004 London Double Header, between the four "London" teams: Harlequins, London Irish, London Wasps and Saracens.
At the end of the season, Harlequins were relegated, to be replaced by Bristol for 2005–06.