 Dewar Challenge Cup | |
| Tournament details | |
|---|---|
| Country |  USA |
| Dates | 11 March-16 June 1945 |
| Defending champions | Brooklyn Hispano |
| Final positions | |
| Champions | Brookhattan |
| Runner-up | Cleveland Americans |
| Semifinalists |
|
The 1945 National Challenge Cup was the 32nd edition of the United States Football Association's annual open cup. Brookhattan was the winner and the Cleveland Americans were the runners-up.