diff --git a/l10n/phrases_ja.go b/l10n/phrases_ja.go
new file mode 100644
index 0000000..0f3868b
--- /dev/null
+++ b/l10n/phrases_ja.go
@@ -0,0 +1,24 @@
+package l10n
+
+var phrasesJA = map[string]string{
+	"Anonymous post": "匿名投稿",
+	"Blogs":          "ブログ",
+	"Newer":          "新しい投稿",
+	"Older":          "古い投稿",
+	"Posts":          "投稿",
+	"Publish to...":  "公開先…",
+	"Publish":        "公開",
+	"Read more...":   "もっと読む…",
+	"Toggle theme":   "テーマを変更",
+	"View posts":     "投稿を見る",
+	"delete":         "削除",
+	"edit":           "編集",
+	"move to...":     "移動…",
+	"pin":            "固定表示する",
+	"published with write.as":  "write.as を使って公開されました",
+	"share modal ending":       "友達に送信したり、ウェブの大海にシェアしたり、ツイートしたり。もっと知る。",
+	"share modal introduction": "全ての投稿には秘密の、シェアするとだれでも見ることのできる固有のURLがあります。これがそのURLです:",
+	"share modal title":        "投稿をシェアする",
+	"share":                    "シェア",
+	"unpin":                    "固定表示をやめる",
+}
diff --git a/l10n/strings.go b/l10n/strings.go
index 09c215e..ee8a8af 100644
--- a/l10n/strings.go
+++ b/l10n/strings.go
@@ -1,22 +1,24 @@
 package l10n
 
 // Strings returns a translation set that will take any term and return its
 // translation.
 func Strings(lang string) map[string]string {
 	switch lang {
 	case "de":
 		return phrasesDE
 	case "es":
 		return phrasesES
 	case "fr":
 		return phrasesFR
 	case "hu":
 		return phrasesHU
 	case "it":
 		return phrasesIT
+	case "ja":
+		return phrasesJA
 	case "ro":
 		return phrasesRO
 	default:
 		return phrases
 	}
 }