| Jack Mustard | |
| Fullname: | John Mustard |
| Birth Place: | Boldon, England |
| Position: | Winger |
| Height: | 5 ft 7+1/2 in[1] |
| Years1: | 1926–1929 |
| Caps1: | 37 |
| Goals1: | 4 |
| Years2: | 1929–1930 |
| Caps2: | 31 |
| Goals2: | 4 |
| Years3: | 1930–1932 |
| Caps3: | 70 |
| Goals3: | 17 |
| Years4: | 1932–1933 |
| Caps4: | 15 |
| Goals4: | 5 |
| Years5: | 1933 |
| Caps5: | 15 |
| Goals5: | 4 |
| Years6: | 1933–1934 |
| Caps6: | 20 |
| Goals6: | 3 |
| Years7: | 1934–1935 |
| Caps7: | 38 |
| Goals7: | 17 |
| Years8: | 1935–1936 |
| Caps8: | 16 |
| Goals8: | 1 |
| Years9: | 1936–1938 |
| Caps9: | 78 |
| Goals9: | 11 |
John Mustard was an English professional association footballer who played as a winger. During his 12-year career, he played for eight different clubs in the Football League.