| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Ichibuura | city | Nagasaki | Japan | 33.39 | 129.43 | 3 | 8285 |
| Ichikira | city | Nagasaki | Japan | 32.88 | 128.95 | 0 | 4491 |
| Ichinogō | city | Nagasaki | Japan | 32.97 | 129.93 | 0 | 32225 |
| Ichinosemen | city | Nagasaki | Japan | 33.26 | 129.66 | 114 | 45129 |
| Iinoseto | city | Nagasaki | Japan | 32.95 | 129.00 | 150 | 4325 |
| Iinosetogo | city | Nagasaki | Japan | 32.95 | 129.00 | 150 | 4325 |
| Iirachō | city | Nagasaki | Japan | 33.28 | 129.43 | 147 | 6821 |
| Ikemuke | city | Nagasaki | Japan | 33.34 | 129.58 | 216 | 17249 |
| Ikezaki | city | Nagasaki | Japan | 33.05 | 129.66 | 0 | 10798 |
| Ikitsuki | city | Nagasaki | Japan | 33.39 | 129.43 | 3 | 8285 |
| Ikitsuki | city | Nagasaki | Japan | 33.41 | 129.43 | 0 | 7952 |
| Ikitsuki-ichibuura | city | Nagasaki | Japan | 33.39 | 129.43 | 3 | 8285 |
| Ikitsukicho-ichibu | city | Nagasaki | Japan | 33.41 | 129.43 | 0 | 7952 |
| Ikitsukicho-yamadamen | city | Nagasaki | Japan | 33.37 | 129.43 | 3 | 8950 |
| Ikitsukichō-misaki | city | Nagasaki | Japan | 33.43 | 129.43 | 3 | 5003 |
| Ikitsukichō-tachiura | city | Nagasaki | Japan | 33.36 | 129.43 | 3 | 8950 |
| Ikituki | city | Nagasaki | Japan | 33.41 | 129.43 | 0 | 7952 |
| Ikkiyama | city | Nagasaki | Japan | 32.63 | 128.70 | 830 | 5003 |
| Ikkuyama | city | Nagasaki | Japan | 32.63 | 128.70 | 830 | 5003 |
| Ikuchi | city | Nagasaki | Japan | 34.63 | 129.35 | 157 | 1724 |
| Ikutsuyama | city | Nagasaki | Japan | 32.63 | 128.70 | 830 | 5003 |
| Imabuku | city | Nagasaki | Japan | 33.35 | 129.78 | 219 | 15015 |
| Imabuku | city | Nagasaki | Japan | 33.17 | 129.71 | 124 | 87909 |
| Imabukuchō | city | Nagasaki | Japan | 33.17 | 129.71 | 124 | 87909 |
| Imabukumachi | city | Nagasaki | Japan | 33.17 | 129.71 | 124 | 87909 |
| Imafuku | city | Nagasaki | Japan | 33.17 | 129.71 | 124 | 87909 |
| Imafuku | city | Nagasaki | Japan | 33.35 | 129.78 | 219 | 15015 |
| Imafukucho | city | Nagasaki | Japan | 33.17 | 129.71 | 124 | 87909 |
| Imafukucho-naberubaemen | city | Nagasaki | Japan | 33.34 | 129.79 | 3 | 17069 |
| Imafukucho-sakanomen | city | Nagasaki | Japan | 33.34 | 129.76 | 278 | 18851 |
| Imafukuchō-higashimen | city | Nagasaki | Japan | 33.35 | 129.78 | 219 | 15015 |
| Imahuku | city | Nagasaki | Japan | 33.35 | 129.78 | 219 | 15015 |
| Imasato | city | Nagasaki | Japan | 34.29 | 129.22 | 183 | 4695 |
| Imasato | city | Nagasaki | Japan | 32.95 | 129.05 | 272 | 9888 |
| Imasatogo | city | Nagasaki | Japan | 32.95 | 129.05 | 272 | 9888 |
| Imatsu | city | Nagasaki | Japan | 32.92 | 129.92 | 0 | 30072 |
| Imatuku | city | Nagasaki | Japan | 33.35 | 129.78 | 219 | 15015 |
| Imazato | city | Nagasaki | Japan | 34.29 | 129.22 | 183 | 4695 |
| Imazato | city | Nagasaki | Japan | 32.95 | 129.05 | 272 | 9888 |
| Imazu | city | Nagasaki | Japan | 32.92 | 129.92 | 0 | 30072 |
| Imazugō | city | Nagasaki | Japan | 32.92 | 129.92 | 0 | 30072 |
| Ina | city | Nagasaki | Japan | 34.56 | 129.32 | 206 | 1624 |
| Inga | city | Nagasaki | Japan | 34.54 | 129.34 | 13 | 2543 |
| Inohashi | city | Nagasaki | Japan | 34.43 | 129.37 | 0 | 3730 |
| Inorigochigo | city | Nagasaki | Japan | 33.10 | 129.89 | 830 | 39629 |
| Inoseto | city | Nagasaki | Japan | 32.95 | 129.00 | 150 | 4325 |
| Inugaura | city | Nagasaki | Japan | 34.54 | 129.34 | 13 | 2543 |
| Ionda | city | Nagasaki | Japan | 33.13 | 129.70 | 65 | 43234 |
| Ionoura | city | Nagasaki | Japan | 33.13 | 129.70 | 65 | 43234 |
| Ionouracho | city | Nagasaki | Japan | 33.13 | 129.70 | 65 | 43234 |
| Ionouramen | city | Nagasaki | Japan | 33.13 | 129.70 | 65 | 43234 |
| Iorinouramachi | city | Nagasaki | Japan | 33.13 | 129.70 | 65 | 43234 |
| Irie-cho | city | Nagasaki | Japan | 32.73 | 129.88 | 830 | 168771 |
| Iriemachi | city | Nagasaki | Japan | 32.73 | 129.88 | 830 | 168771 |
| Isahaja | city | Nagasaki | Japan | 32.84 | 130.04 | 134 | 87810 |
| Isahara | city | Nagasaki | Japan | 32.84 | 130.04 | 134 | 87810 |
| Isahaya | city | Nagasaki | Japan | 32.84 | 130.04 | 134 | 87810 |
| Isahaya-chhī | city | Nagasaki | Japan | 32.84 | 130.04 | 134 | 87810 |
| Isegawa | city | Nagasaki | Japan | 33.10 | 129.79 | 311 | 84618 |
| Isekigo | city | Nagasaki | Japan | 33.13 | 129.91 | 278 | 28681 |
| Ishida | city | Nagasaki | Japan | 33.07 | 129.69 | 249 | 14706 |
| Ishikigō | city | Nagasaki | Japan | 33.08 | 129.87 | 252 | 37642 |
| Isuhara | city | Nagasaki | Japan | 34.20 | 129.29 | 75 | 5903 |
| Itanoura | city | Nagasaki | Japan | 33.48 | 129.51 | 0 | 1590 |
| Itose | city | Nagasaki | Japan | 34.37 | 129.32 | 62 | 4729 |
| Itosi | city | Nagasaki | Japan | 34.37 | 129.32 | 62 | 4729 |
| Itoyachō | city | Nagasaki | Japan | 33.25 | 129.43 | 301 | 7929 |
| Itsuhara | city | Nagasaki | Japan | 34.20 | 129.29 | 75 | 5903 |
| Iwanouechō | city | Nagasaki | Japan | 33.36 | 129.56 | 9 | 13787 |
| Iwasenoura | city | Nagasaki | Japan | 32.87 | 129.08 | 341 | 5131 |
| Iwaseura | city | Nagasaki | Japan | 32.87 | 129.08 | 341 | 5131 |
| Iwashigaura | city | Nagasaki | Japan | 34.52 | 129.44 | 3 | 2146 |
| Iwayagō | city | Nagasaki | Japan | 33.08 | 129.89 | 406 | 29544 |
| Izarikami | city | Nagasaki | Japan | 33.01 | 129.76 | 45 | 13085 |
| Izhuara | city | Nagasaki | Japan | 34.20 | 129.29 | 75 | 5903 |
| Izuhara | city | Nagasaki | Japan | 34.20 | 129.29 | 75 | 5903 |
| Izuharamachi-agami | city | Nagasaki | Japan | 34.15 | 129.27 | 75 | 5039 |
| Izuharamachi-are | city | Nagasaki | Japan | 34.27 | 129.20 | 232 | 4908 |
| Izuharamachi-azamo | city | Nagasaki | Japan | 34.11 | 129.21 | 3 | 4407 |
| Izuharamachi-komoda | city | Nagasaki | Japan | 34.23 | 129.20 | 295 | 5697 |
| Izuharamachi-kotsuki | city | Nagasaki | Japan | 34.19 | 129.18 | 308 | 4800 |
| Izuharamachi-koura | city | Nagasaki | Japan | 34.23 | 129.30 | 75 | 4831 |
| Izuharamachi-kunehama | city | Nagasaki | Japan | 34.17 | 129.18 | 308 | 5033 |
| Izuharamachi-kuneinaka | city | Nagasaki | Japan | 34.18 | 129.19 | 295 | 6661 |
| Izuharamachi-kutamichi | city | Nagasaki | Japan | 34.20 | 129.29 | 3 | 5903 |
| Izuharamachi-kuwa | city | Nagasaki | Japan | 34.13 | 129.26 | 262 | 5180 |
| Izuharamachi-magari | city | Nagasaki | Japan | 34.22 | 129.31 | 82 | 4715 |
| Izuharamachi-oura | city | Nagasaki | Japan | 34.17 | 129.28 | 318 | 5166 |
| Izuharamachi-sasuse | city | Nagasaki | Japan | 34.15 | 129.18 | 291 | 4546 |
| Izuharamachi-shiine | city | Nagasaki | Japan | 34.22 | 129.19 | 301 | 5026 |
| Izuharamachi-tsutsu | city | Nagasaki | Japan | 34.12 | 129.19 | 91 | 4107 |
| Izuharamachi-tsutsuse | city | Nagasaki | Japan | 34.15 | 129.18 | 291 | 5324 |
| Izuharamachi-uchiyama | city | Nagasaki | Japan | 34.16 | 129.23 | 830 | 8641 |
| Izuharamachi-yoranaiin | city | Nagasaki | Japan | 34.12 | 129.23 | 193 | 5466 |
| Izumi | city | Nagasaki | Japan | 34.67 | 129.47 | 255 | 2245 |