diff --git a/CHANGELOG.md b/CHANGELOG.md
index 64cd1c0..7dc2006 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,10 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 
 ## [Unreleased]
 
+### Added
+
+- Japanese translation ([#234](https://github.com/jpanther/congo/pull/234))
+
 ### Changed
 
 - Upgrade to Mermaid v9.1.3
diff --git a/exampleSite/content/docs/configuration.md b/exampleSite/content/docs/configuration.md
index 4b3b0d4..5e4b362 100644
--- a/exampleSite/content/docs/configuration.md
+++ b/exampleSite/content/docs/configuration.md
@@ -58,6 +58,7 @@ The theme currently supports the following languages by default:
 | :israel: Hebrew                  | `he`    |
 | :hungary: Hungarian              | `hu`    |
 | :it: Italian                     | `it`    |
+| :jp: Japanese                    | `ja`    |
 | :brazil: Portuguese (Brazil)     | `pt-br` |
 | :portugal: Portuguese (Portugal) | `pt-pt` |
 | :romania: Romanian               | `ro`    |
diff --git a/i18n/ja.yaml b/i18n/ja.yaml
new file mode 100644
index 0000000..84c8dee
--- /dev/null
+++ b/i18n/ja.yaml
@@ -0,0 +1,55 @@
+article:
+  anchor_label: "アンカー"
+  date: "{{ .Date }}"
+  date_updated: "更新日: {{ .Date }}"
+  draft: "下書き"
+  edit_title: "編集"
+  reading_time:
+    one: "{{ .Count }} 分"
+    other: "{{ .Count }} 分"
+  reading_time_title: "読むのに必要な時間"
+  table_of_contents: "目次"
+  word_count:
+    one: "{{ .Count }} 文字"
+    other: "{{ .Count }} 文字"
+  
+author:
+  byline_title: "著者"
+
+code:
+  copy: "コピー"
+  copied: "コピーしました"
+
+error:
+  404_title: "ページが見つかりませんでした。 :confused:"
+  404_error: "Error 404"
+  404_description: "ご要望のページは存在しないようです。"
+
+footer:
+  dark_appearance: "ダークモードへ切り替え"
+  light_appearance: "ライトモードへ切り替え"
+  powered_by: "Powered by {{ .Hugo }} & {{ .Congo }}"
+
+list:
+  externalurl_title: "外部サイトへリンク"
+  no_articles: "ここに掲載する記事はまだありません。"
+
+nav:
+  scroll_to_top_title: "TOPへスクロール"
+  skip_to_main: "メインコンテンツへスキップ"
+
+search:
+  open_button_title: "検索 (/)"
+  close_button_title: "閉じる (Esc)"
+  input_placeholder: "Search"
+
+sharing:
+  email: " Eメールを送る"
+  facebook: "Facebookでシェアする"
+  linkedin: "LinkedInでシェアする"
+  pinterest: "Pinterestでピンする"
+  reddit: "Redditに投稿する"
+  twitter: "Twitterに投稿する"
+
+shortcode:
+  recent_articles: "最近の記事"