| Player | MFC games | MFC goals | Years |
| Tom Kavanagh | 2 | 1 | 1989 |
| Peter Keays | 40 | 4 | 1974-1977 |
| Peter Keenan | 131 | 88 | 1970-1975, 1981-1982 |
| Declan Keilty | 2 | 0 | 2019 |
| David Kelly | 3 | 0 | 1975-1976 |
| Frank Kelly | 31 | 1 | 1934-1936 |
| Carlyle Kenley | 7 | 3 | 1913-1914 |
| Bryan Kenneally | 171 | 68 | 1959-1969 |
| Andy Kennedy | 1 | 0 | 1908 |
| Ben Kennedy | 15 | 13 | 2016 |
| Dick Kennedy | 13 | 11 | 1945-1946 |
| Frank Kennedy | 36 | 11 | 1944-1947 |
| Mal Kennedy | 17 | 4 | 1911-1912 |
| Jay Kennedy Harris | 39 | 12 | 2014-2015, 2017-2019 |
| Con Kenney | 9 | 5 | 1919 |
| Rod Keogh | 22 | 8 | 1990-1992 |
| Stephen Kerley | 43 | 3 | 1971-1974 |
| Graham Kerr | 3 | 0 | 1957 |
| John Kerr | 1 | 2 | 1958 |
| Peter Kiel | 1 | 0 | 1987 |
| Ron Kimberley | 15 | 4 | 1939-1942, 1944 |
| Joe Kinnear | 47 | 0 | 1932-1937 |
| Arthur Kirk | 1 | 0 | 1897 |
| George Knight | 3 | 1 | 1913 |
| Nigel Kol | 28 | 13 | 1985-1987 |
| Kade Kolodjashnij | 2 | 0 | 2019- |
| Doug Koop | 24 | 5 | 1987-1988 |
| Trevor Korn | 3 | 1 | 1981 |
| Darren Kowal | 105 | 46 | 1992-1999 |
| Gordon Kramer | 23 | 2 | 1942, 1944-1945 |
| Alan Krause | 12 | 8 | 1951-1953 |
