| Issuer | Date | Desc | State | ||
| - | no image | Cayman Islands | 7/20/1999 | 30th Anniversary of First Manned Landing on Moon, sheet of 1 type | |
| - | no image | Cayman Islands | 8/18/1999 | Queen Elizabeth the Queen Mother's Century, sheet of 1 type | |
| - | no image | Cayman Islands | 11/17/1999 | Christmas 1999, sheet of 4 types |