| RETURN TO LEAGUE LISTING | |||||||||||
| Members of Football League | 1920 - 1930 | now | folded | ||||||||
| Year | Division | Home | Away | Date | Win | Draw | Loss | Gills Gls | Away Gls | ||
| 1929/1930 | English Division 3 South | Gillingham | 6-0 | Merthyr Town | 26/04/1930 | 1 | 0 | 0 | 6 | 0 | |
| English Division 3 South | Merthyr Town | 1-1 | Gillingham | 21/12/1929 | 0 | 1 | 0 | 1 | 1 | ||
| 1928/1929 | English Division 3 South | Gillingham | 1-0 | Merthyr Town | 04/05/1929 | 1 | 0 | 0 | 1 | 0 | |
| English Division 3 South | Merthyr Town | 2-3 | Gillingham | 22/12/1928 | 1 | 0 | 0 | 3 | 2 | ||
| 1927/1928 | English Division 3 South | Merthyr Town | 3-1 | Gillingham | 12/03/1928 | 0 | 0 | 1 | 1 | 3 | |
| English Division 3 South | Gillingham | 1-1 | Merthyr Town | 17/09/1927 | 0 | 1 | 0 | 1 | 1 | ||
| 1926/1927 | English Division 3 South | Gillingham | 0-1 | Merthyr Town | 26/03/1927 | 0 | 0 | 1 | 0 | 1 | |
| English Division 3 South | Merthyr Town | 2-0 | Gillingham | 06/11/1926 | 0 | 0 | 1 | 0 | 2 | ||
| 1925/1926 | English Division 3 South | Gillingham | 3-1 | Merthyr Town | 09/09/1925 | 1 | 0 | 0 | 3 | 1 | |
| English Division 3 South | Merthyr Town | 0-0 | Gillingham | 03/09/1925 | 0 | 1 | 0 | 0 | 0 | ||
| 1924/1925 | English Division 3 South | Merthyr Town | 0-0 | Gillingham | 21/03/1925 | 0 | 1 | 0 | 0 | 0 | |
| English Division 3 South | Gillingham | 2-1 | Merthyr Town | 15/11/1924 | 1 | 0 | 0 | 2 | 1 | ||
| 1923/1924 | English Division 3 South | Gillingham | 2-1 | Merthyr Town | 12/03/1924 | 1 | 0 | 0 | 2 | 1 | |
| English Division 3 South | Merthyr Town | 0-2 | Gillingham | 08/12/1923 | 1 | 0 | 0 | 2 | 0 | ||
| 1922/1923 | English Division 3 South | Gillingham | 2-0 | Merthyr Town | 21/04/1923 | 1 | 0 | 0 | 2 | 0 | |
| English Division 3 South | Merthyr Town | 1-0 | Gillingham | 14/04/1923 | 0 | 0 | 1 | 0 | 1 | ||
| 1921/1922 | English Division 3 South | Merthyr Town | 2-0 | Gillingham | 01/10/1921 | 0 | 0 | 1 | 0 | 2 | |
| English Division 3 South | Gillingham | 5-0 | Merthyr Town | 24/09/1921 | 1 | 0 | 0 | 5 | 0 | ||
| 1920/1921 | English Division 3 (old) | Merthyr Town | 6-1 | Gillingham | 18/09/1920 | 0 | 0 | 1 | 1 | 6 | |
| English Division 3 (old) | Gillingham | 0-0 | Merthyr Town | 11/09/1920 | 0 | 1 | 0 | 0 | 0 | ||