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| Mid Glamorgan Knockout Cup | ||||
| Winners | Finalists | |||
| 1975 | Gelli Park | Penygraig Belle Vue | ||
| 1976 | Wattstown | Maerdy | ||
| 1977 | Harlequins | Wattstown | ||
| 1978 | Trelewis | Beddau | ||
| 1979 | Gelli Park | Harlequins | ||
| 1980 | Gelli Park | Ynysybwl | ||
| 1981 | Gelli Park | Merthyr West End | ||
| 1982 | Ystradfechan | Harlequins | ||
| 1983 | Harlequins | Merthyr West End | ||
| 1984 | Tonypandy | Merthyr West End | ||
| 1985 | Ystradfechan | Maerdy | ||
| 1986 | Ystradfechan | Trelewis | ||
| 1987 | Merthyr West End | Harlequins | ||
| 1988 | Ystradfechan | Merthyr West End | ||
| 1989 | Tonypandy | Gelli Park | ||
| 1990 | Tonypandy | Merthyr West End | ||
| 1991 | Harlequins | Wattstown | ||
| 1992 | Harlequins | Merthyr West End | ||
| 1993 | Tonypandy | Harlequins | ||
| 1994 | Guest Memorial | Ystradfechan | ||
| 1995 | Gelli Park | Pontypridd | ||
| 1996 | Ystradfechan | Guest Memorial | ||
| 1997 | Ystradfechan | Troedyrhiw | ||
| 1998 | Gelli Park | Harlequins | ||
| 1999 | Ferndale | Gelli Park | ||
| 2000 | Gelli Park | Nixons | ||
| 2001 | Nixons | Harlequins | ||
| 2002 | Gelli Park | Harlequins | ||
| 2003 | Nixons | Gelli Park | ||
| 2004 | Ferndale | Nixons | ||
| 2005 | Troedyrhiw | Ferndale | ||
| 2006 | Guest Memorial | Nixons | ||
| 2007 | Ferndale | Merthyr West End | ||
| 2008 | Ystradfechan | Thomastown | ||
| 2009 | Ystradfechan | Harlequins | ||
| 2010 | Ystradfechan | Ferndale | ||
| 2011 | ||||