| National Challenge Cup | |
| Year: | 1914–15 |
| Country: |  United States |
| Num Teams: | 64 |
| Winners: | Bethlehem Steel |
| Second: | Brooklyn Celtic |
| Count: | 1 |
| Defending Champions: | Brooklyn Field Club |
| Matches: | 69 |
| Goals: | 244 |
| Prev Season: | 1913–14 |
| Next Season: | 1915–16 |
The 1914–15 National Challenge Cup was the second tournament of the modern-day Lamar Hunt U.S. Open Cup. Many more teams - 80 - competed in 1915 after the success of the 1913–14 tournament. St. Louis and California were the only major soccer-playing regions without a representative. Bethlehem Steel won the tournament.
Home teams listed on top of bracket
Thomas Murray Jock Ferguson Neil Clarke Robert Millar (c) James Ford
Thomas Campion Roddy O'Halloran (c)