diff --git a/packages/tldraw/src/translations/ja.json b/packages/tldraw/src/translations/ja.json
new file mode 100644
index 000000000..798791c5f
--- /dev/null
+++ b/packages/tldraw/src/translations/ja.json
@@ -0,0 +1,90 @@
+{
+  "style.menu.color": "色",
+  "style.menu.fill": "塗りつぶし",
+  "style.menu.dash": "線",
+  "style.menu.size": "大きさ",
+  "style.menu.keep.open": "常に表示",
+  "style.menu.font": "フォント",
+  "style.menu.align": "配置",
+  "styles": "スタイル",
+  "zoom.in": "拡大",
+  "zoom.out": "縮小",
+  "to": " ",
+  "to.selection": "選択したアイテムに合わせる",
+  "to.fit": "すべて表示",
+  "menu.file": "ファイル",
+  "menu.edit": "編集",
+  "menu.view": "表示",
+  "menu.preferences": "設定",
+  "menu.sign.in": "サインイン",
+  "menu.sign.out": "サインアウト",
+  "sponsored": "支援",
+  "become.a.sponsor": "支援する",
+  "zoom.to.selection": "選択したアイテムに合わせて拡大",
+  "zoom.to.fit": "拡大してすべてを表示",
+  "zoom.to": " ",
+  "preferences.dark.mode": "ダークモード",
+  "preferences.focus.mode": "フォーカスモード",
+  "preferences.debug.mode": "デバッグモード",
+  "preferences.show.grid": "グリッドを表示",
+  "preferences.use.cad.selection": "CADの選択法を使用",
+  "preferences.keep.stylemenu.open": "スタイルメニューを常に表示",
+  "preferences.always.show.snaps": "スナップを常に表示",
+  "preferences.rotate.handles": "回転ハンドルを表示",
+  "preferences.binding.handles": "結合ハンドルを表示",
+  "preferences.clone.handles": "クローンハンドルを表示",
+  "undo": "元に戻す",
+  "redo": "やり直し",
+  "cut": "切り取り",
+  "copy": "コピー",
+  "paste": "貼り付け",
+  "copy.as": "形式を選択してコピー",
+  "export.as": "形式を選択してエクスポート",
+  "select.all": "すべて選択",
+  "select.none": "選択を解除",
+  "delete": "削除",
+  "new.project": "新しいプロジェクト",
+  "open": "開く",
+  "save": "保存",
+  "save.as": "名前をつけて保存",
+  "upload.media": "メディアをアップロード",
+  "create.page": "ページを作成",
+  "new.page": "新規ページ",
+  "page.name": "ページ名",
+  "duplicate": "複製",
+  "cancel": "キャンセル",
+  "copy.invite.link": "共有リンクをクリップボードにコピー",
+  "create.multiplayer.project": "マルチプレイヤープロジェクトを作成",
+  "copy.multiplayer.project": "マルチプレイヤープロジェクトにコピー",
+  "select": "選択",
+  "eraser": "消しゴム",
+  "draw": "描画",
+  "arrow": "矢印",
+  "text": "テキスト",
+  "sticky": "ふせん",
+  "Rectangle": "長方形",
+  "Ellipse": "楕円形",
+  "Triangle": "三角形",
+  "Line": "線",
+  "rotate": "回転",
+  "lock.aspect.ratio": "縦横比を固定",
+  "unlock.aspect.ratio": "縦横比の固定を解除",
+  "group": "グルーピング",
+  "ungroup": "グループ解除",
+  "move.to.back": "最後面に移動",
+  "move.backward": "ひとつ後ろに移動",
+  "move.forward": "ひとつ前に移動",
+  "move.to.front": "最背面に移動",
+  "reset.angle": "角度を初期化",
+  "lock": "ロック",
+  "unlock": "アンロック",
+  "move.to.page": "ページへ移動",
+  "flip.horizontal": "水平方向に反転",
+  "flip.vertical": "垂直方向に反転",
+  "move": "移動",
+  "to.front": "最前面へ",
+  "forward": "ひとつ前へ",
+  "backward": "ひとつ後ろへ",
+  "back": "最背面へ",
+  "language": "言語"
+}
diff --git a/packages/tldraw/src/translations/translations.ts b/packages/tldraw/src/translations/translations.ts
index ddc065410..2b1f9acdd 100644
--- a/packages/tldraw/src/translations/translations.ts
+++ b/packages/tldraw/src/translations/translations.ts
@@ -4,6 +4,7 @@ import fr from './fr.json'
 import it from './it.json'
 import ko_kr from './ko-kr.json'
 import zh_cn from './zh-cn.json'
+import ja from './ja.json'
 
 // The default language (english) must have a value for every message.
 // Other languages may have missing messages. If the application finds
@@ -19,6 +20,7 @@ export const TRANSLATIONS: TDTranslations = [
   { code: 'it', label: 'Italiano', messages: it },
   { code: 'ko-kr', label: '한국어', messages: ko_kr },
   { code: 'zh-cn', label: 'Chinese - Simplified', messages: zh_cn },
+  { code: 'ja', label: '日本語', messages: ja },
 ]
 
 /* ---------- Derived Types (do not change) --------- */