diff --git a/dll/win32/themeui/lang/ja-JP.rc b/dll/win32/themeui/lang/ja-JP.rc
new file mode 100644
index 00000000000..01016a152ec
--- /dev/null
+++ b/dll/win32/themeui/lang/ja-JP.rc
@@ -0,0 +1,35 @@
+LANGUAGE LANG_JAPANESE, SUBLANG_DEFAULT
+
+STRINGTABLE
+BEGIN
+    IDS_BRICK "レンガ"
+    IDS_EGGPLANT "なすび"
+    IDS_GOLIVE "緑のオリーブ" //Spruce
+    IDS_HCONTRAST_1 "ハイコントラスト 1"
+    IDS_HCONTRAST_2 "ハイコントラスト 2"
+    IDS_HCONTRAST_BLACK "ハイコントラスト 黒"
+    IDS_HCONTRAST_WHITE "ハイコントラスト 白"
+    IDS_LILAC "ライラック"
+    IDS_MAPLE "カエデ"
+    IDS_MARINE "海"
+    IDS_PLUM "梅"
+    IDS_PUMPKIN "カボチャ"
+    IDS_RAIN "雨の日"
+    IDS_RWB "赤・白・青"
+    IDS_CLASSIC "ReactOS クラシック"
+    IDS_STANDARD "ReactOS 標準"
+    IDS_ROSE "バラ"
+    IDS_SAND "砂漠" //Desert
+    IDS_SLATE "石盤"
+    IDS_SKY "空"
+    IDS_STORM "嵐"
+    IDS_TEAL "青緑"
+    IDS_WHEAT "小麦"
+END
+
+STRINGTABLE
+BEGIN
+    IDS_SIZE_NORMAL "通常"
+    IDS_SIZE_LARGE "大きい"
+    IDS_SIZE_XLARGE "特大"
+END
diff --git a/dll/win32/themeui/themeui.rc b/dll/win32/themeui/themeui.rc
index 21de11681b7..230cac724d4 100644
--- a/dll/win32/themeui/themeui.rc
+++ b/dll/win32/themeui/themeui.rc
@@ -34,6 +34,9 @@ LANGUAGE LANG_NEUTRAL, SUBLANG_NEUTRAL
 #ifdef LANGUAGE_IT_IT
     #include "lang/it-IT.rc"
 #endif
+#ifdef LANGUAGE_JA_JP
+    #include "lang/ja-JP.rc"
+#endif
 #ifdef LANGUAGE_PL_PL
     #include "lang/pl-PL.rc"
 #endif