| RETURN TO LEAGUE LISTING | |||||||||||
| Year | Division | Home | Away | Date | Win | Draw | Loss | Gills Gls | Away Gls | ||
| 1988/1989 | English Division 3 (old) | Swansea City | 3-2 | Gillingham | 19/03/1989 | 0 | 0 | 1 | 2 | 3 | |
| English Division 3 (old) | Gillingham | 2-3 | Swansea City | 27/08/1988 | 0 | 0 | 1 | 2 | 3 | ||
| 1985/1986 | English Division 3 (old) | Swansea City | 2-2 | Gillingham | 22/03/1986 | 0 | 1 | 0 | 2 | 2 | |
| English Division 3 (old) | Gillingham | 5-1 | Swansea City | 26/10/1985 | 1 | 0 | 0 | 5 | 1 | ||
| 1984/1985 | English Division 3 (old) | Gillingham | 1-1 | Swansea City | 02/02/1985 | 0 | 1 | 0 | 1 | 1 | |
| English Division 3 (old) | Swansea City | 0-1 | Gillingham | 29/09/1984 | 1 | 0 | 0 | 1 | 0 | ||
| 1978/1979 | English Division 3 (old) | Swansea City | 3-1 | Gillingham | 16/03/1979 | 0 | 0 | 1 | 1 | 3 | |
| English Division 3 (old) | Gillingham | 2-0 | Swansea City | 04/11/1978 | 1 | 0 | 0 | 2 | 0 | ||
| 1973/1974 | English Division 4 | Gillingham | 1-1 | Swansea City | 29/12/1973 | 0 | 1 | 0 | 1 | 1 | |
| English Division 4 | Swansea City | 0-3 | Gillingham | 08/09/1973 | 1 | 0 | 0 | 3 | 0 | ||
| 1970/1971 | English Division 3 (old) | Gillingham | 0-0 | Swansea City | 06/03/1971 | 0 | 1 | 0 | 0 | 0 | |
| English Division 3 (old) | Swansea City | 1-0 | Gillingham | 24/10/1970 | 0 | 0 | 1 | 0 | 1 | ||
| 1966/1967 | English Division 3 (old) | Gillingham | 0-0 | Swansea Town | 04/02/1967 | 0 | 1 | 0 | 0 | 0 | |
| English Division 3 (old) | Swansea Town | 1-1 | Gillingham | 24/09/1966 | 0 | 1 | 0 | 1 | 1 | ||
| 1965/1966 | English Division 3 (old) | Swansea Town | 0-3 | Gillingham | 23/04/1966 | 1 | 0 | 0 | 3 | 0 | |
| English Division 3 (old) | Gillingham | 2-0 | Swansea Town | 27/11/1965 | 1 | 0 | 0 | 2 | 0 | ||
| 1924/1925 | English Division 3 South | Swansea Town | 2-0 | Gillingham | 04/04/1925 | 0 | 0 | 1 | 0 | 2 | |
| English Division 3 South | Gillingham | 0-0 | Swansea Town | 18/03/1925 | 0 | 1 | 0 | 0 | 0 | ||
| 1923/1924 | English Division 3 South | Gillingham | 0-1 | Swansea Town | 29/09/1923 | 0 | 0 | 1 | 0 | 1 | |
| English Division 3 South | Swansea Town | 3-1 | Gillingham | 22/09/1923 | 0 | 0 | 1 | 1 | 3 | ||
| 1922/1923 | English Division 3 South | Gillingham | 2-2 | Swansea Town | 30/09/1922 | 0 | 1 | 0 | 2 | 2 | |
| English Division 3 South | Swansea Town | 1-0 | Gillingham | 23/09/1922 | 0 | 0 | 1 | 0 | 1 | ||
| 1921/1922 | English Division 3 South | Gillingham | 0-0 | Swansea Town | 12/11/1921 | 0 | 1 | 0 | 0 | 0 | |
| English Division 3 South | Swansea Town | 2-0 | Gillingham | 05/11/1921 | 0 | 0 | 1 | 0 | 2 | ||
| 1920/1921 | English Division 3 (old) | Gillingham | 2-1 | Swansea Town | 30/04/1921 | 1 | 0 | 0 | 2 | 1 | |
| English Division 3 (old) | Swansea Town | 2-0 | Gillingham | 23/04/1921 | 0 | 0 | 1 | 0 | 2 | ||
| Year | Competition | Home | Away | Date | Win | Draw | Loss | Gills Gls | Away Gls | ||
| 1998/1999 | AM Cup Quarter Final South | Swansea City | 0-1 | Gillingham | 05/01/1999 | 1 | 0 | 0 | 1 | 0 | |
| 1996/1997 | League Cup 1st Rd 2nd Leg | Gillingham | 2-0 | Swansea City | 03/09/1996 | 1 | 0 | 0 | 2 | 0 | |
| League Cup 1st Rd 1st Leg | Swansea City | 0-1 | Gillingham | 20/08/1996 | 1 | 0 | 0 | 1 | 0 | ||
| 1971/1972 | FA Cup 3rd Rd | Swansea City | 1-0 | Gillingham | 15/01/1972 | 0 | 0 | 1 | 0 | 1 | |
| 1959/1960 | FA Cup 3rd Rd | Gillingham | 1-4 | Swansea Town | 09/01/1960 | 0 | 0 | 1 | 1 | 4 | |
| 1946/1947 | FA Cup 3rd Rd | Swansea Town | 4-1 | Gillingham | 11/01/1947 | 0 | 0 | 1 | 1 | 4 | |
| 1919/1920 | FA Cup 6th Qualifying Rd 3rd Replay | Gillingham | 3-1 | Swansea Town | 30/11/1919 | at Chelsea | 1 | 0 | 0 | 3 | 1 |
| FA Cup 6th Qualifying Rd 2nd Replay | Swansea Town | 0-0 | Gillingham | 29/11/1919 | at Cardiff | 0 | 1 | 0 | 0 | 0 | |
| FA Cup 6th Qualifying Rd 1st Replay | Swansea Town | 1-1 | Gillingham | 24/11/1919 | 0 | 1 | 0 | 1 | 1 | ||
| FA Cup 6th Qualifying Rd | Gillingham | 1-1 | Swansea Town | 20/11/1919 | 0 | 1 | 0 | 1 | 1 | ||
| League | W | D | L | GF | GA | ||||||
| Home | 4 | 7 | 2 | 17 | 10 | ||||||
| Away | 3 | 2 | 8 | 14 | 20 | ||||||