| Issuer | Date | Desc | State | ||
| - | no image | Tonga | 1/1/2000 | empty sheet (#19883) | incomplete |
| - | no image | Tonga | 2/4/2000 | Year of the Dragon 2000, sheet of 4 types | incomplete |
| - | no image | Tonga | 5/22/2000 | STAMP SHOW 2000, sheet of 2 types | all added |
| - | no image | Tonga | 7/7/2000 | empty sheet (#19886) | incomplete |