| League | National League |
|---|---|
| No. of competitors | 16 |
| Champions | Long Eaton Invaders |
| Knockout Cup | Hackney Kestrels |
| Individual | Ian Barney |
| Pairs | Stoke Potters |
| Fours | Mildenhall Fen Tigers |
| Highest average | Steve Lawson |
| Division/s above | 1984 British League |
The 1984 National League was contested as the second division of motorcycle speedway in the United Kingdom.