| 1998-1999 Allied Dunbar Premiership | |
| Champions: | Leicester Tigers (3rd title) |
| Runnersup: | Northampton Saints |
| Relegated: | West Hartlepool |
| Matches: | 182 |
| Attendance: | 1002308 |
| Prevseason: | 1997–98 |
| Nextseason: | 1999–00 |
The 1998–1999 English Premiership (called the Allied Dunbar Premiership for sponsorship reasons) was the 12th season of the league at the top of the English rugby union pyramid, the Premiership (rugby union).
This was the second season under the sponsorship of Allied Dunbar.
The league was expanded to include 14 teams instead of 12, with London Scottish, West Hartlepool and Bedford Blues being elected to the premiership. The league commenced on 5 September 1998 and finished on 20 May 1999.
| width=25% | Team | width=25% | Stadium | width=25% | Capacity | width=25% | City/Area |
|---|---|---|---|---|---|---|---|
| Bath | Recreation Ground | 8,200 | Bath, Somerset | ||||
| Bedford | Goldington Road | 6,000 | Bedford, Bedfordshire | ||||
| Gloucester | Kingsholm | 11,000 | Gloucester, Gloucestershire | ||||
| Harlequins | The Stoop | 8,500 | Twickenham, London | ||||
| Leicester Tigers | Welford Road | 16,000 | Leicester, Leicestershire | ||||
| London Irish | The Avenue | 6,600 | Sunbury-on-Thames, Surrey | ||||
| London Scottish | The Stoop | 8,500 | Twickenham, London | ||||
| Newcastle Falcons | Kingston Park | 10,000 | Newcastle upon Tyne, Tyne and Wear | ||||
| Northampton Saints | Franklin's Gardens | 10,000 | Northampton, Northamptonshire | ||||
| Richmond | Madejski Stadium | 24,161 | Reading, Berkshire | ||||
| Sale | Heywood Road | 5,400 | Sale, Greater Manchester | ||||
| Saracens | Vicarage Road | 22,000 | Watford, Hertfordshire | ||||
| Wasps | Loftus Road | 18,439 | Shepherd's Bush, London | ||||
| West Hartlepool | Victoria Park | 7,856 | Hartlepool, County Durham | ||||
Note: Flags to the left of player names indicate national team as has been defined under World Rugby eligibility rules, or primary nationality for players who did not yet earn international senior caps. Players may hold one or more non-WR nationalities.
Source:[1]
| Rank | Player | Club | Points |
|---|---|---|---|
| 1 |  John Schuster | Harlquins | 331 |
| 2 | Gavin Johnson | Saracens | 318 |
| 3 | Jonny Wilkinson | Newcastle Falcons | 306 |
| 4 | Mike Catt | Bath | 294 |
| 5 | Kenny Logan | Wasps | 263 |
| 6 | / Shane Howarth | Sale | 246 |
| 7 | Steven Vile | West Hartlepool | 240 |
| 8 | Niall Woods | London Irish | 215 |
| 9 | Earl Va'a | Richmond | 205 |
| 10 | Joel Stransky | Leicester Tigers | 202 |
Source:[2]