 Dewar Challenge Cup | |
| Tournament details | |
|---|---|
| Country |  USA |
| Defending champions | New York Ukrainians |
| Final positions | |
| Champions | Philadelphia Ukrainian Nationals (4th title) |
| Runner-up | Orange County Soccer Club |
| 1967 CONCACAF Champions' Cup | Philadelphia Ukrainian Nationals |
The 1966 National Challenge Cup was the 53rd edition of the USSFA's annual open soccer championship. The Philadelphia Ukrainians defeated the Orange County Soccer Club to win.