diff --git a/Text/TeXMath/Parser.hs b/Text/TeXMath/Parser.hs
--- a/Text/TeXMath/Parser.hs
+++ b/Text/TeXMath/Parser.hs
@@ -424,7 +424,7 @@
                , ("\\overleftarrow", \e -> EOver e (ESymbol Accent "\x20D6"))
                , ("\\hat", \e -> EOver e (ESymbol Accent "\x005E"))
                , ("\\widehat", \e -> EOver e (ESymbol Accent "\x0302"))
-               , ("\\tilde", \e -> EOver e (ESymbol Accent "~"))
+               , ("\\tilde", \e -> EOver e (ESymbol Accent "\x0303"))
                , ("\\widetilde", \e -> EOver e (ESymbol Accent "\x02DC"))
                , ("\\bar", \e -> EOver e (ESymbol Accent "\x203E"))
                , ("\\overbrace", \e -> EOver e (ESymbol Accent "\xFE37"))
diff --git a/changelog b/changelog
--- a/changelog
+++ b/changelog
@@ -1,3 +1,7 @@
+texmath (0.6.6.3)
+
+  * Use combining tilde accent for \tilde.  Closes pandoc #1324.
+
 texmath (0.6.6.2)
 
   * Allow \left to be used with ), ], etc.  Ditto with \right.
diff --git a/texmath.cabal b/texmath.cabal
--- a/texmath.cabal
+++ b/texmath.cabal
@@ -1,5 +1,5 @@
 Name:                texmath
-Version:             0.6.6.2
+Version:             0.6.6.3
 Cabal-Version:       >= 1.6
 Build-type:          Custom
 Synopsis:            Conversion of LaTeX math formulas to MathML or OMML.