| Billy Harker | |
| Fullname: | William Harker |
| Birth Date: | 1911 |
| Birth Place: | Brierfield, England |
| Position: | Inside forward |
| Years1: | 1930–1931 |
| Caps1: | 18 |
| Goals1: | 5 |
| Years2: | 1931–1933 |
| Caps2: | 24 |
| Goals2: | 6 |
| Years3: | 1933–1934 |
| Caps3: | 9 |
| Goals3: | 0 |
| Years4: | 1934–1936 |
| Caps4: | 62 |
| Goals4: | 23 |
| Years5: | 1936–1937 |
| Caps5: | 0 |
| Goals5: | 0 |
| Years6: | 1937–1939 |
| Caps6: | 35 |
| Goals6: | 3 |
| Years7: | 1939–1940 |
| Caps7: | 0 |
| Goals7: | 0 |
William Harker (21 December 1910 – 1973) was an English professional association footballer who played as an inside forward for several teams in the Football League.[1]