| Billy Welsh | |
| Fullname: | William Welsh |
| Birth Date: | 2 May 1904 |
| Birth Place: | Douglas Water, South Lanarkshire, Scotland |
| Years1: | 1921 |
| Clubs1: | Douglas Water Thistle |
| Years2: | 1921–1925 |
| Clubs2: | Hearts |
| Caps2: | 17 |
| Goals2: | 4 |
| Years3: | 1925 |
| Clubs3: | → Dundee United (loan) |
| Years4: | 1925–1927 |
| Clubs4: | Dundee United |
| Caps4: | 61 |
| Goals4: | 21 |
| Years5: | 1927–1928 |
| Clubs5: | Charlton Athletic |
| Caps5: | 29 |
| Goals5: | 9 |
| Years6: | 1928–1930 |
| Clubs6: | Wigan Borough |
| Caps6: | 57 |
| Goals6: | 16 |
| Years7: | 1930 |
| Clubs7: | Southport |
| Caps7: | 11 |
| Goals7: | 3 |
| Years8: | 1930–1931 |
| Clubs8: | Newport County |
| Caps8: | 6 |
| Goals8: | 1 |
| Years9: | 1930 |
| Clubs9: | → Connah's Quay & Shotton (loan) |
| Years10: | 1931 |
| Clubs10: | Wrexham |
| Caps10: | 9 |
| Goals10: | 1 |
| Years11: | 1931–1934 |
| Clubs11: | Gateshead |
| Caps11: | 65 |
| Goals11: | 23 |
| Years12: | 1934–1936 |
| Clubs12: | Hartlepools United |
| Caps12: | 3 |
| Goals12: | 0 |
| Years13: | 1936 |
| Clubs13: | Jarrow |
William Welsh (2 May 1904 – 1978) was a Scottish professional footballer who played as an inside forward. He made appearances in the Scottish and English football league throughout his career.[1]