Sheets of Cook Islands, 1980
| Issuer | Date | Desc | State | ||
| - | no image | Cook Islands | 3/31/1980 | empty sheet (#75763) | incomplete |
| - | no image | Cook Islands | 3/31/1980 | empty sheet (#75764) | incomplete |
| - | no image | Cook Islands | 3/31/1980 | empty sheet (#75765) | incomplete |
| - | no image | Cook Islands | 3/31/1980 | empty sheet (#75766) | incomplete |
| - | no image | Cook Islands | 3/31/1980 | empty sheet (#75767) | incomplete |
| - | no image | Cook Islands | 3/31/1980 | empty sheet (#75768) | incomplete |
| - | no image | Cook Islands | 3/31/1980 | empty sheet (#75769) | incomplete |
| - |  |
Cook Islands | 5/27/1980 | Rotary 75th, sheet of 3 types | |
| - |  |
Cook Islands | 9/22/1980 | Queen Mother 80th, sheet of 1 type | |
| - |  |
Cook Islands | 11/7/1980 | empty sheet (#19169) | incomplete |
| - |  |
Cook Islands | 11/7/1980 | empty sheet (#19170) | incomplete |
| - |  |
Cook Islands | 12/1/1980 | empty sheet (#19171) | incomplete |