| National Challenge Cup | |
| Year: | 1951 |
| Country: |  United States |
| Dates: | March 11- June 17, 1951 |
| Defending Champions: | St. Louis Simpkins–Ford |
| Winners: | New York German–Hungarian S.C. |
| Count: | 1 |
| Second: | Heidelberg S.C. |
| Semifinal1: | Sparta |
| Semifinal2: | Philadelphia Nationals |
| Prev Season: | 1950 |
| Next Season: | 1952 |
The 1951 National Challenge Cup was the 38th edition of the USSFA's annual open soccer championship. The German Hungarian S.C. from Eastern New York defeated the Pittsburgh Heidelberg in a two-leg final to win.[1] The Heidelberg manager later filed a protest with the United States Soccer Football Association, specifically regarding the "inefficient and partial" officials.[2]