diff --git a/pymbolic/parser.py b/pymbolic/parser.py
index 751cd14301d7bd46d7b94d0c342a5f6256c266c8..048db64f998941d46afacc89ae334a9cdbe0e758 100644
--- a/pymbolic/parser.py
+++ b/pymbolic/parser.py
@@ -70,7 +70,7 @@ class Parser:
             (_closepar, pytools.lex.RE(r"\)")),
             (_openbracket, pytools.lex.RE(r"\[")),
             (_closebracket, pytools.lex.RE(r"\]")),
-            (_identifier, pytools.lex.RE(r"[@a-z_A-Z_][@a-zA-Z_0-9]*")),
+            (_identifier, pytools.lex.RE(r"[@$a-z_A-Z_][@$a-zA-Z_0-9]*")),
             (_whitespace, pytools.lex.RE("[ \n\t]*")),
             (_comma, pytools.lex.RE(",")),
             (_dot, pytools.lex.RE(r"\.")),