1955 Speedway National League
| League | National League |
|---|---|
| No. of competitors | 7 |
| Champions | Wimbledon Dons |
| National Trophy | Norwich Stars |
| Midland Cup | Birmingham Brummies |
| Highest average | Jack Young |
| Division/s below | National League (Div 2) 1955 Southern Area League |
The 1955 Speedway National League was the 21st season and tenth post-war season of the highest tier of motorcycle speedway in Great Britain.