| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Daigyō | city | Niigata | Japan | 38.35 | 139.55 | 308 | 471 |
| Dainichi | city | Niigata | Japan | 37.79 | 139.28 | 830 | 21806 |
| Dekijima | city | Niigata | Japan | 37.90 | 139.02 | 3 | 158246 |
| Dekishima | city | Niigata | Japan | 37.90 | 139.02 | 3 | 158246 |
| Deyu | city | Niigata | Japan | 37.82 | 139.30 | 830 | 17150 |
| Doichi | city | Niigata | Japan | 37.09 | 138.73 | 830 | 23029 |
| Dosokohama | city | Niigata | Japan | 37.22 | 138.32 | 52 | 28835 |