Japonia podzielona jest na 47 jednostek administracyjnych: 43 prefektury (ken), dwójka okręgi miejskie (fu – Kioto dodatkowo Osaka), terytorium ulubiony (dō – cała ostrów Hokkaidō) dodatkowo terytorium stołeczny (to – Tokio). Ponadto Kraj Kwitnącej Wiśni pocięty jest na 8 regionów: Hokkaido, Tōhoku, Kantō, Chūbu, Kinki (potocznie nazywany Kansai), Chūgoku, Shikoku plus Kyūshū, kto obejmuje też prefekturę Okinawa.
Hokkaido
Tōhoku
Kantō
Chūbu
Kansai
Chūgoku
Sikoku
Kiusiu
| lp. | flaga | prefektura | populacja | stolica |
|---|---|---|---|---|
| 1 | Hokkaido | 5 632 133 | Sapporo | |
| 2 | Aomori | 1 436 628 | Aomori | |
| 3 | Iwate | 1 416 180 | Morioka | |
| 4 | Miyagi | 2 370 280 | Sendai | |
| 5 | Akita | 1 174 905 | Akita | |
| 6 | Yamagata | 1 223 000 | Yamagata | |
| 7 | Fukushima | 2 119 218 | Fukushima | |
| 8 | Ibaraki | 2 985 424 | Mito | |
| 9 | Tochigi | 2 011 313 | Utsunomiya | |
| 10 | Gunma | 2 024 820 | Maebashi | |
| 11 | Saitama | 6 938 006 | Saitama | |
| 12 | Chiba | 6 062 202 | Chiba | |
| 13 | Tokio | 12 577 819 | Shinjuku (Tokio) | |
| 14 | Kanagawa | 8 639 665 | Jokohama | |
| 15 | Niigata | 2 444 108 | Niigata | |
| 16 | Toyama | 1 120 320 | Toyama | |
| 17 | Ishikawa | 1 180 744 | Kanazawa | |
| 18 | Fukui | 821 589 | Fukui | |
| 19 | Yamanashi | 884 531 | Kofu | |
| 20 | Nagano | 2 206 175 | Nagano | |
| 21 | Gifu | 2 107 687 | Gifu | |
| 22 | Shizuoka | 3 792 457 | Shizuoka | |
| 23 | Aichi | 7 254 432 | Nagoja | |
| 24 | Mie | 1 863 815 | Tsu | |
| 25 | Shiga | 1 337 770 | Otsu | |
| 26 | Kioto | 2 644 331 | Kioto | |
| 27 | Osaka | 8 815 757 | Osaka | |
| 28 | Hyōgo | 5 595 212 | Kobe | |
| 29 | Nara | 1 421 367 | Nara | |
| 30 | Wakayama | 1 036 061 | Wakayama | |
| 31 | Tottori | 618 727 | Tottori | |
| 32 | Shimane | 761 503 | Matsue | |
| 33 | Okayama | 1 957 056 | Okayama | |
| 34 | Hiroszima | 2 878 915 | Hiroszima | |
| 35 | Yamaguchi | 1 492 575 | Yamaguchi | |
| 36 | Tokushima | 824 108 | Tokushima | |
| 37 | Kagawa | 1 022 843 | Takamatsu | |
| 38 | Ehime | 1 493 126 | Matsuyama | |
| 39 | Kōchi | 796 196 | Kochi | |
| 40 | Fukuoka | 5 057 932 | Fukuoka | |
| 41 | Saga | 866 402 | Saga | |
| 42 | Nagasaki | 1 516 536 | Nagasaki | |
| 43 | Kumamoto | 1 842 140 | Kumamoto | |
| 44 | Ōita | 1 209 587 | Ōita | |
| 45 | Miyazaki | 1 170 023 | Miyazaki | |
| 46 | Kagoshima | 1 786 214 | Kagoshima | |
| 47 | Okinawa | 1 365 043 | Naha |