---
title: "横浜銀行"
aliases: ["Bank of Yokohama", "The Bank of Yokohama", "BOY", "株式会社横浜銀行"]
domain: regional-banks
created: 2026-05-21
last_updated: 2026-07-30
last_tended: 2026-07-30
review_by: 2026-11-21
confidence: likely
tags: [JapanFG, banking, regional-bank, concordia-fg, yokohama-fg, kanto, operating-company]
status: active
sources:
  - "https://www.fsa.go.jp/menkyo/menkyoj/ginkou.xlsx"
  - "https://www.boy.co.jp/boy/company/gaiyou.html"
---

# 横浜銀行


## Wiki route

This entry sits under [[regional-banks/INDEX|regional-banks INDEX]]. Read it against [[regional-banks/higashi-nippon-bank|東日本銀行]] for peer / contrast context and [[banking/INDEX|banking index]] for the broader system / regulatory boundary.

## TL;DR

株式会社横浜銀行は、金融庁の銀行免許一覧に掲載される神奈川県本店の地方銀行で、[[regional-banks/concordia-fg]]（現 横浜フィナンシャルグループ）の core operating bank。神奈川県の retail / SME / public-sector finance では最大級の bank-license anchor として扱う。

## 1. License / group boundary

The following table is scoped to public primary sources (fsa.go.jp, boy.co.jp). It restates licence / structure / product boundaries from those materials and does not invent market share, ranking, or unstated numerical claims. ^[source:fsa.go.jp; boy.co.jp]

| Item | Notes |
|---|---|
| Legal name | 株式会社横浜銀行 |
| License route | Banking Act regional bank; FSA bank license list |
| Group boundary | [[regional-banks/concordia-fg]] / Yokohama Financial Group operating bank |
| Home market | Kanagawa / Yokohama |
| Wiki role | Kanagawa regional-bank operating-company page |

## 2. Operating model

横浜銀行は、神奈川県を中心に retail deposits, mortgage, SME / mid-market finance, local government finance, and regional wealth services を担う regional bank。[[regional-banks/concordia-fg]] page covers the holding-company strategy and [[regional-banks/higashi-nippon-bank]] integration; this page keeps the Yokohama Bank license and local franchise separate.

## 3. Why this page matters

- Parent [[regional-banks/concordia-fg]] coverage alone did not expose the licensed bank boundary.
- Key comparison point for [[regional-banks/kanagawa-bank]] and other Kanagawa regional-finance pages.
- Needed for bank operating-company completeness in the Kanto slice.

## Related

- [[regional-banks/concordia-fg]]
- [[regional-banks/higashi-nippon-bank]]
- [[regional-banks/kanagawa-bank]]
- [[banking/INDEX]]

## Sources

- FSA: bank license list, regional banks, as of 2026-04-01.
- Bank of Yokohama official company profile.