diff --git a/lib/encodings b/lib/encodings
index a21a374ac8..679ce5f93d 100644
--- a/lib/encodings
+++ b/lib/encodings
@@ -171,6 +171,15 @@ End
 
 # encodings that do not use a package
 
+# Traditional Japanese TeX programs require neither CJK nor inputenc
+# package.
+Encoding euc-jp-plain EUC-JP-plain EUC-JP variable none
+End
+Encoding jis-plain JIS-plain JIS variable none
+End
+Encoding shift-jis-plain SJIS-plain SJIS variable none
+End
+
 # This one needs hardcoded support, since the inputenc package does not know
 # tis620-0, and thailatex sets up babel directly to use tis620-0, so the
 # LaTeX name is never output to .tex files (but needed for the hardcoded
diff --git a/lib/languages b/lib/languages
index 4b1662f933..506b3c1f6e 100644
--- a/lib/languages
+++ b/lib/languages
@@ -43,6 +43,7 @@ hebrew      hebrew	"Hebrew"	true   cp1255     he_IL	 ""
 irish       irish	"Irish"		false  iso8859-15 ga_IE	 ""
 italian     italian	"Italian"	false  iso8859-15 it_IT	 ""
 japanese    ""		"Japanese"	false  euc-jp     ja_JP	 ""
+japanese-plain ""	"Japanese (non-CJK)"	false  euc-jp-plain ja_JP	 ""
 kazakh	    kazakh	"Kazakh"	false  pt154      kk_KZ	 ""
 # there is no country code for Korean because ko_KR is the same as ko_KI
 korean      ""		"Korean"	false  euc-kr     ko	 ""