| 501 | JP Morgan Bank | 0402 | Foreign Banks |
| 502 | Ju Hachi Bank | 0180 | Regional Banks |
| 503 | Ju Roku Bank | 0153 | Regional Banks |
| 504 | Juso Shinkin Bank | 1645 | Cooperative Regional Financial Institutions |
| 505 | Kaga Nokyo Bank | 5943 | Agricultural Cooperative Bank |
| 506 | Kagawa Bank | 0573 | Regional Banks |
| 507 | Kagawa Honan Nokyo Bank | 8371 | Agricultural Cooperative Bank |
| 508 | Kagawa-ken Nokyo Bank | 8332 | Agricultural Cooperative Bank |
| 509 | Kagawa-ken Shingyoren Bank | 9486 | Fishery Cooperative Bank |
| 510 | Kagawa-ken Shinkumi Bank | 2721 | Credit Cooperative |
| 511 | Kagawa-ken Shinren Bank | 3037 | Community-based Financial Institution for Farmers |
| 512 | Kagoshima Bank | 0185 | Regional Banks |
| 513 | Kagoshima Chuo Nokyo Bank | 9229 | Agricultural Cooperative Bank |
| 514 | Kagoshima Izumi Nokyo Bank | 9302 | Agricultural Cooperative Bank |
| 515 | Kagoshima Kimotsuki Nokyo Bank | 9341 | Agricultural Cooperative Bank |
| 516 | Kagoshima Kogyo Shinkumi Bank | 2890 | Credit Cooperative |
| 517 | Kagoshima Shinkin Bank | 1990 | Cooperative Regional Financial Institutions |
| 518 | Kagoshima Sogo Shinkin Bank | 1991 | Cooperative Regional Financial Institutions |
| 519 | Kagoshima-ken Ishi Shinkumi Bank | 2891 | Credit Cooperative |
| 520 | Kagoshima-ken Shingyoren Bank | 9495 | Fishery Cooperative Bank |
| 521 | Kagoshima-ken Shinren Bank | 3046 | Community-based Financial Institution for Farmers |
| 522 | Kaifu Nokyo Bank | 8288 | Agricultural Cooperative Bank |
| 523 | Kakegawa Shinkin Bank | 1513 | Cooperative Regional Financial Institutions |
| 524 | Kakegawa-shi Nokyo Bank | 6386 | Agricultural Cooperative Bank |
| 525 | Kakogawa-shi Minami Nokyo Bank | 7274 | Agricultural Cooperative Bank |
| 526 | Kameari Shinkin Bank | 1323 | Cooperative Regional Financial Institutions |
| 527 | Kami Yotsuba Nokyo Bank | 3710 | Agricultural Cooperative Bank |
| 528 | Kamihaya-shi Nokyo Bank | 5815 | Agricultural Cooperative Bank |
| 529 | Kamiina Nokyo Bank | 5384 | Agricultural Cooperative Bank |
| 530 | Kamikawa Chuo Nokyo Bank | 3225 | Agricultural Cooperative Bank |
| 531 | Kamimashiki Nokyo Bank | 8982 | Agricultural Cooperative Bank |
| 532 | Kamishihoro-cho Nokyo Bank | 3280 | Agricultural Cooperative Bank |
| 533 | Kamitsuga Nokyo Bank | 4456 | Agricultural Cooperative Bank |
| 534 | Kamitsuke Shinkumi Bank | 2148 | Credit Cooperative |
| 535 | Kamo Shinkin Bank | 1380 | Cooperative Regional Financial Institutions |
| 536 | Kamoto Nokyo Bank | 8941 | Agricultural Cooperative Bank |
| 537 | Kan-onji Shinkin Bank | 1833 | Cooperative Regional Financial Institutions |
| 538 | Kanagawa Bank | 0530 | Regional Banks |
| 539 | Kanagawa Seisho Nokyo Bank | 5147 | Agricultural Cooperative Bank |
| 540 | Kanagawa-ken Ishi Shinkumi Bank | 2304 | Credit Cooperative |
| 541 | Kanagawa-ken Shikaishi Shinkumi Bank | 2305 | Credit Cooperative |
| 542 | Kanagawa-ken Shingyoren Bank | 9463 | Fishery Cooperative Bank |
| 543 | Kanagawa-ken Shinren Bank | 3014 | Community-based Financial Institution for Farmers |
| 544 | Kanazawa Chuo Nokyo Bank | 6024 | Agricultural Cooperative Bank |
| 545 | Kanazawa Chuo Shinkumi Bank | 2411 | Credit Cooperative |
| 546 | Kanazawa Shinkin Bank | 1440 | Cooperative Regional Financial Institutions |
| 547 | Kanazawa-shi Nokyo Bank | 6025 | Agricultural Cooperative Bank |
| 548 | Kaneyama Nokyo Bank | 3987 | Agricultural Cooperative Bank |
| 549 | Kankoku Gaikan Bank | 0423 | Foreign Banks |
| 550 | Kankoku Sangyo Bank | 0603 | Regional Banks |
| 551 | Kanratomioka Nokyo Bank | 4608 | Agricultural Cooperative Bank |
| 552 | Kansai Urban Bank | 0554 | Regional Banks |
| 553 | Kanuma Sogo Shinkin Bank | 1223 | Cooperative Regional Financial Institutions |
| 554 | Karasuyama Shinkin Bank | 1227 | Cooperative Regional Financial Institutions |
| 555 | Karatsu Nokyo Bank | 8766 | Agricultural Cooperative Bank |
| 556 | Karatsu Shinkin Bank | 1930 | Cooperative Regional Financial Institutions |
| 557 | Kasaoka Shinkumi Bank | 2674 | Credit Cooperative |
| 558 | Kashimanada Nokyo Bank | 4296 | Agricultural Cooperative Bank |
| 559 | Kashiwazaki Nokyo Bank | 5720 | Agricultural Cooperative Bank |
| 560 | Kashiwazaki Shinkin Bank | 1375 | Cooperative Regional Financial Institutions |
| 561 | Kasuya Nokyo Bank | 8626 | Agricultural Cooperative Bank |
| 562 | Katori Nokyo Bank | 5000 | Agricultural Cooperative Bank |
| 563 | Kawaguchi Shinkin Bank | 1251 | Cooperative Regional Financial Institutions |
| 564 | Kawaguchi-shi Nokyo Bank | 4691 | Agricultural Cooperative Bank |
| 565 | Kawanoe Shinkin Bank | 1866 | Cooperative Regional Financial Institutions |
| 566 | Kawasaki Shinkin Bank | 1283 | Cooperative Regional Financial Institutions |
| 567 | Kazuno Nokyo Bank | 3762 | Agricultural Cooperative Bank |
| 568 | Keiji Shinkumi Bank | 2526 | Credit Cooperative |
| 569 | Keishicho Shokuin Shinkumi Bank | 2271 | Credit Cooperative |
| 570 | Keiyo Bank | 0522 | Regional Banks |
| 571 | Ken O Aikawa Nokyo Bank | 5153 | Agricultural Cooperative Bank |
| 572 | Kenebetsu Nokyo Bank | 3350 | Agricultural Cooperative Bank |
| 573 | Kesennuma Shinkin Bank | 1175 | Cooperative Regional Financial Institutions |
| 574 | Kibi Shinkin Bank | 1741 | Cooperative Regional Financial Institutions |
| 575 | Kihoku Shinkin Bank | 1585 | Cooperative Regional Financial Institutions |
| 576 | Kihokukawakami Nokyo Bank | 7550 | Agricultural Cooperative Bank |
| 577 | Kikuchichiiki Nokyo Bank | 8949 | Agricultural Cooperative Bank |
| 578 | Kimitsu Shinkumi Bank | 2190 | Credit Cooperative |
| 579 | Kimitsu-shi Nokyo Bank | 4909 | Agricultural Cooperative Bank |
| 580 | Kimotsukiaira-cho Nokyo Bank | 9347 | Agricultural Cooperative Bank |
| 581 | Kinan Nokyo Bank | 7576 | Agricultural Cooperative Bank |
| 582 | Kinki Osaka Bank | 0159 | Regional Banks |
| 583 | Kinki Rokin Bank | 2978 | Labour Banks |
| 584 | Kinki Sangyo Shinkumi Bank | 2567 | Credit Cooperative |
| 585 | Kino Nokyo Bank | 3277 | Agricultural Cooperative Bank |
| 586 | Kinokuni Shinkin Bank | 1674 | Cooperative Regional Financial Institutions |
| 587 | Kinosato Nokyo Bank | 7543 | Agricultural Cooperative Bank |
| 588 | Kirayaka Bank | 0508 | Regional Banks |
| 589 | Kiryu Shinkin Bank | 1204 | Cooperative Regional Financial Institutions |
| 590 | Kisarazu-shi Nokyo Bank | 4902 | Agricultural Cooperative Bank |
| 591 | Kishu Chuo Nokyo Bank | 7565 | Agricultural Cooperative Bank |
| 592 | Kiso Nokyo Bank | 5441 | Agricultural Cooperative Bank |
| 593 | Kita Biwako Nokyo Bank | 6924 | Agricultural Cooperative Bank |
| 594 | Kita Echigo Nokyo Bank | 5554 | Agricultural Cooperative Bank |
| 595 | Kita Fuji Nokyo Bank | 5284 | Agricultural Cooperative Bank |
| 596 | Kita Gun Shinkumi Bank | 2083 | Credit Cooperative |
| 597 | Kita Gunma Shinkin Bank | 1210 | Cooperative Regional Financial Institutions |
| 598 | Kita Gunshibukawa Nokyo Bank | 4593 | Agricultural Cooperative Bank |
| 599 | Kita Haruka Nokyo Bank | 3248 | Agricultural Cooperative Bank |
| 600 | Kita Hibiki Nokyo Bank | 3238 | Agricultural Cooperative Bank |