diff --git a/lefthook.yml b/lefthook.yml
new file mode 100644
index 00000000..5efa2ac0
--- /dev/null
+++ b/lefthook.yml
@@ -0,0 +1,8 @@
+pre-commit:
+  parallel: true
+  commands:
+    eslint:
+      glob: "*.{js,ts,jsx,tsx,md,mdx}"
+      run: npm run lint # ESLint / Prettier が勝手にコードを壊すのを防ぐため、 lint:fix はしていない。
+      exclude: "contents"
+      # stage_fixed: true # ↑を lint:fix に変更する場合、これを uncomment すること
diff --git a/package-lock.json b/package-lock.json
index e85aad66..847c4f91 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -40,6 +40,7 @@
         "eslint": "^8.56.0",
         "eslint-config-airbnb-typescript-prettier": "^5.0.0",
         "gatsby-plugin-postcss": "^6.13.1",
+        "lefthook": "^1.9.2",
         "postcss": "^8.4.33",
         "prettier": "^2.8.8",
         "tailwindcss": "^3.4.1",
@@ -13163,6 +13164,169 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
+    "node_modules/lefthook": {
+      "version": "1.9.2",
+      "resolved": "https://registry.npmjs.org/lefthook/-/lefthook-1.9.2.tgz",
+      "integrity": "sha512-boUWdXdT6MUPghZuuX64xXbG7u69fcgkD6vNEjoxh3Gll6o6MfY/ITpj/HrRAUVym1jWXB0Z298qL789OD+dZw==",
+      "dev": true,
+      "hasInstallScript": true,
+      "license": "MIT",
+      "bin": {
+        "lefthook": "bin/index.js"
+      },
+      "optionalDependencies": {
+        "lefthook-darwin-arm64": "1.9.2",
+        "lefthook-darwin-x64": "1.9.2",
+        "lefthook-freebsd-arm64": "1.9.2",
+        "lefthook-freebsd-x64": "1.9.2",
+        "lefthook-linux-arm64": "1.9.2",
+        "lefthook-linux-x64": "1.9.2",
+        "lefthook-openbsd-arm64": "1.9.2",
+        "lefthook-openbsd-x64": "1.9.2",
+        "lefthook-windows-arm64": "1.9.2",
+        "lefthook-windows-x64": "1.9.2"
+      }
+    },
+    "node_modules/lefthook-darwin-arm64": {
+      "version": "1.9.2",
+      "resolved": "https://registry.npmjs.org/lefthook-darwin-arm64/-/lefthook-darwin-arm64-1.9.2.tgz",
+      "integrity": "sha512-kWcSqAdGu5MAtxdLBpxg8H+p4d/pO7tA7+3Q1Cj9NM+c0L3R2ZefGNStGF6Ftbu8grkpz9/jCD588O9PHjsVfw==",
+      "cpu": [
+        "arm64"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "darwin"
+      ]
+    },
+    "node_modules/lefthook-darwin-x64": {
+      "version": "1.9.2",
+      "resolved": "https://registry.npmjs.org/lefthook-darwin-x64/-/lefthook-darwin-x64-1.9.2.tgz",
+      "integrity": "sha512-M4zspEhp0uXaIEVkcPFYayxElFzFhhSfEk29FMhxZOfbmZYPUSYaSsTHgb7oeR0O0/zcMTVDk4nNWsBp2Jpx5A==",
+      "cpu": [
+        "x64"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "darwin"
+      ]
+    },
+    "node_modules/lefthook-freebsd-arm64": {
+      "version": "1.9.2",
+      "resolved": "https://registry.npmjs.org/lefthook-freebsd-arm64/-/lefthook-freebsd-arm64-1.9.2.tgz",
+      "integrity": "sha512-7Grb+wdY99Iuorw9aUu+zYKdkEaQs6OVGn4jgav+AyBSxJA0WZmXgdmZqd6+LuRVYn8JRO8bER8Tu4QUa1fSxg==",
+      "cpu": [
+        "arm64"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "freebsd"
+      ]
+    },
+    "node_modules/lefthook-freebsd-x64": {
+      "version": "1.9.2",
+      "resolved": "https://registry.npmjs.org/lefthook-freebsd-x64/-/lefthook-freebsd-x64-1.9.2.tgz",
+      "integrity": "sha512-tMBN//hqHMUJ9v7k9W3l9aMEBw//enEX+2eQLcvDJSuEE+J3AUbNg9YA5kTpVsDuafg10ziJXAuGD0kYh2ubww==",
+      "cpu": [
+        "x64"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "freebsd"
+      ]
+    },
+    "node_modules/lefthook-linux-arm64": {
+      "version": "1.9.2",
+      "resolved": "https://registry.npmjs.org/lefthook-linux-arm64/-/lefthook-linux-arm64-1.9.2.tgz",
+      "integrity": "sha512-U16CUCaQSRQTbjqvrsJrwppCK4d/IQjMimfC/SwAEreXr7WkBiekV+Gv+fytEnVHJTCSb5MajJTV+WpBsg6jGg==",
+      "cpu": [
+        "arm64"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "linux"
+      ]
+    },
+    "node_modules/lefthook-linux-x64": {
+      "version": "1.9.2",
+      "resolved": "https://registry.npmjs.org/lefthook-linux-x64/-/lefthook-linux-x64-1.9.2.tgz",
+      "integrity": "sha512-lkEes30MquDhiIrNQ61CfNvGLCN39d8PZ2S/dwLMJBtTH7qfVqXu8UR3KhKEDD1h43cEb4pnIeO2BJUZyn/FNw==",
+      "cpu": [
+        "x64"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "linux"
+      ]
+    },
+    "node_modules/lefthook-openbsd-arm64": {
+      "version": "1.9.2",
+      "resolved": "https://registry.npmjs.org/lefthook-openbsd-arm64/-/lefthook-openbsd-arm64-1.9.2.tgz",
+      "integrity": "sha512-UJKcL8Iiga8GetYqXqGXy6OeIhtNGim8PHQZH4nfR70s6TPvTvBEGvf48mvfwRyXt8t6aUvz1oyVvRQSdXETug==",
+      "cpu": [
+        "arm64"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "openbsd"
+      ]
+    },
+    "node_modules/lefthook-openbsd-x64": {
+      "version": "1.9.2",
+      "resolved": "https://registry.npmjs.org/lefthook-openbsd-x64/-/lefthook-openbsd-x64-1.9.2.tgz",
+      "integrity": "sha512-CLS119Fn91mZ2U7ug3fjYMfM7rvwB7gwpDUbuQlEPnVsHJOtaIpu+cmhnKKtU6b4B6r5ETMwhc5dDt/tS5curQ==",
+      "cpu": [
+        "x64"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "openbsd"
+      ]
+    },
+    "node_modules/lefthook-windows-arm64": {
+      "version": "1.9.2",
+      "resolved": "https://registry.npmjs.org/lefthook-windows-arm64/-/lefthook-windows-arm64-1.9.2.tgz",
+      "integrity": "sha512-MlN2EnYNF6RUMTGX4csJnHq/J+werlerQsUcYfZrs+TruXCm4MLjwO9Q7vShTws3bsCoeDZnacNTVESQpZG6Lg==",
+      "cpu": [
+        "arm64"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "win32"
+      ]
+    },
+    "node_modules/lefthook-windows-x64": {
+      "version": "1.9.2",
+      "resolved": "https://registry.npmjs.org/lefthook-windows-x64/-/lefthook-windows-x64-1.9.2.tgz",
+      "integrity": "sha512-7gl1L3qj6xWsqsYJ/ACRDUJruMWLqIRGcI66RiAEnQ3aSnnk0FLCVxIyMwecgW3IWY1O2C69EXV4Og7/0l9JVQ==",
+      "cpu": [
+        "x64"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "win32"
+      ]
+    },
     "node_modules/legacy-swc-helpers": {
       "name": "@swc/helpers",
       "version": "0.4.14",
diff --git a/package.json b/package.json
index 4fe44064..bf8a673e 100644
--- a/package.json
+++ b/package.json
@@ -14,7 +14,9 @@
     "serve": "gatsby serve",
     "clean": "gatsby clean",
     "lint": "eslint .",
-    "type-check": "tsc --noEmit"
+    "lint:fix": "eslint . --fix",
+    "type-check": "tsc --noEmit",
+    "prepare": "lefthook install"
   },
   "dependencies": {
     "@headlessui/react": "^1.7.18",
@@ -49,6 +51,7 @@
     "eslint": "^8.56.0",
     "eslint-config-airbnb-typescript-prettier": "^5.0.0",
     "gatsby-plugin-postcss": "^6.13.1",
+    "lefthook": "^1.9.2",
     "postcss": "^8.4.33",
     "prettier": "^2.8.8",
     "tailwindcss": "^3.4.1",