| Billy Mitchell | |
| Fullname: | William Mitchell |
| Birth Date: | 1910 11, df=yes |
| Birth Place: | Lurgan, Ireland |
| Height: | 5 ft 5+1/2 in[1] |
| Position: | Half-back |
| Youthclubs1: | Linfield Rangers |
| Years1: | 1928–1929 |
| Clubs1: | Cliftonville |
| Years2: | 1929–1933 |
| Years3: | 1933–1940 |
| Clubs3: | Chelsea |
| Caps3: | 108 |
| Goals3: | 2 |
| Years4: | 1945–1947 |
| Clubs4: | Bath City |
| Nationalyears1: | 1931–1937 |
| Nationalteam1: | Ireland |
| Nationalcaps1: | 15 |
| Nationalgoals1: | 0 |
William Mitchell (22 November 1910 – 30 November 1977) was an Irish footballer who played as a half-back.
Mitchell played as a half-back for Chelsea, amassing 108 league appearances and two goals.
Mitchell was an international footballer for the Ireland national football team.