FA Cup 1991/92, Preliminary Round |
| | | Irthlingborough Diamonds | | Wednesfield | | 1:2 * |
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FA Cup 1990/91, Preliminary Round |
| | | Irthlingborough Diamonds | | Buckingham Town | | 3:4 |
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FA Cup 1989/90, Preliminary Round |
| | | MK Wolverton Town | | Irthlingborough Diamonds | | 2:1 |
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FA Cup 1988/89, First Qualifying Round |
| | | Moor Green | | Irthlingborough Diamonds | | 4:3 * |
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FA Cup 1987/88, Second Qualifying Round |
| | | Irthlingborough Diamonds | | Barnet | | 0:4 |
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FA Cup 1986/87, First Qualifying Round |
| | | Corby Town | | Irthlingborough Diamonds | | 3:0 |
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FA Cup 1985/86, Third Qualifying Round |
| | | Irthlingborough Diamonds | | Halesowen Town | | 1:2 * |
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FA Cup 1984/85, Second Qualifying Round |
| | | Irthlingborough Diamonds | | Nuneaton Borough | | 0:5 |
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FA Cup 1983/84, First Qualifying Round |
| | | Dudley Town | | Irthlingborough Diamonds | | 3:1 |
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FA Cup 1982/83, Third Qualifying Round |
| | | Irthlingborough Diamonds | | King's Lynn | | 1:2 |
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FA Cup 1981/82, Second Qualifying Round |
| | | Tring Town | | Irthlingborough Diamonds | | 1:0 * |
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FA Cup 1980/81, Preliminary Round |
| | | Histon | | Irthlingborough Diamonds | | 3:0 |
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FA Cup 1979/80, First Qualifying Round |
| | | Corby Town | | Irthlingborough Diamonds | | 1:0 |
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FA Cup 1978/79, Fourth Qualifying Round |
| | | Irthlingborough Diamonds | | Dagenham | | 1:2 * |
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FA Cup 1977/78, Second Qualifying Round |
| | | Irthlingborough Diamonds | | Corby Town | | 1:2 |
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FA Cup 1976/77, First Qualifying Round |
| | | Soham Town Rangers | | Irthlingborough Diamonds | | 4:3 * |
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FA Cup 1975/76, First Qualifying Round |
| | | Irthlingborough Diamonds | | AP Leamington | | 1:2 |
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FA Cup 1974/75, Second Qualifying Round |
| | | Potton United | | Irthlingborough Diamonds | | 5:3 |
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FA Cup 1973/74, First Qualifying Round |
| | | St Neots Town | | Irthlingborough Diamonds | | 3:1 |
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FA Cup 1972/73, Third Qualifying Round |
| | | Irthlingborough Diamonds | | Enderby Town | | 0:4 |
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FA Cup 1971/72, Second Qualifying Round |
| | | Witney Town | | Irthlingborough Diamonds | | 3:0 |
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FA Cup 1970/71, Third Qualifying Round |
| | | Cambridge City | | Irthlingborough Diamonds | | 3:0 * |
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FA Cup 1969/70, Second Qualifying Round |
| | | Newmarket Town | | Irthlingborough Diamonds | | 3:1 |
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