Sheets of Nauru, 1998
| Issuer | Date | Desc | State | ||
| - |  |
Nauru | 3/25/1998 | Commonwealth, Oceania and South Pacific Weightlifting Championships 1998, sheet of 4 types | all added |
| - |  |
Nauru | 8/31/1998 | 1st Anniversary of the Death of Diana, Princess of Wales, sheet of 6 types | all added |
| - |  |
Nauru | 9/11/1998 | 16th Commonwealth Games, empty sheet (#12830) | incomplete |
| - |  |
Nauru | 10/26/1998 | 30th Anniversary of Nauruan Independence, sheet of 2 types | all added |
| - |  |
Nauru | 11/21/1998 | empty sheet (#12828) | incomplete |
| - |  |
Nauru | 12/1/1998 | 200th Anniversary of First Contact with the Outside World, sheet of 2 types | all added |