 |
 Dewar Challenge Cup | |
| Tournament details | |
|---|---|
| Country | United States |
| Dates | December 11, 1938 – May 7, 1939 |
| Defending champions | Sparta Garden City |
| Final positions | |
| Champions | Brooklyn St. Mary's Celtic (1st title) |
| Runner-up | Manhattan Beer (IL) |
| Semifinalists |
|
The 1939 National Challenge Cup was the annual open cup held by the United States Football Association now known as the Lamar Hunt U.S. Open Cup.