| Billy Greer | |
| Fullname: | William Henry Greer |
| Birth Date: | 28 February 1872[1] |
| Birth Place: | Preston, England |
| Years1: | 1891–1898 |
| Caps1: | 107 |
| Goals1: | 7 |
| Years2: | 1898–1899 |
| Clubs2: | Darwen |
| Caps2: | 6 |
| Goals2: | 0 |
| Totalcaps: | 113 |
| Totalgoals: | 7 |
William Henry Greer (28 February 1872 – 1937) was an English footballer who played in the Football League for Darwen and Preston North End.[2]