| Mel Slack | |
| Fullname: | Melvyn Slack |
| Birth Date: | 1944 3, df=y |
| Birth Place: | Gurney Valley, Bishop Auckland, England |
| Position: | Midfielder |
| Years2: | 1964–1965 |
| Clubs2: | Sunderland |
| Caps2: | 2 |
| Goals2: | 1 |
| Years3: | 1965–1969 |
| Caps3: | 111 |
| Goals3: | 5 |
| Years4: | 1970–1971 |
| Caps4: | 35 |
| Goals4: | 0 |
Melvyn Slack (7 March 1944 – 6 August 2016)[1] was an English footballer who played in the English Football League for Cambridge United, Southend United, and Sunderland.