| War of the Roses | |
| Contested by | |
 |
 |
| Lancashire | Yorkshire |
| Sport | Rugby league |
| First edition | 1895 |
| Last edition | 2003 |
| Number of series wins | |
 Lancashire
|
 Yorkshire
|
| 44 | 44 |
| Draws: 3 | |
The War of the Roses (also known in its later years as the County of Origin Series) was the inter-county rugby league matches between Lancashire and Yorkshire, the areas where rugby league has traditionally been most popular in England. The series started in 1895 and was last played in 2003. For most of its history the game was played as part of the County Championship.