As other have mentionned, Perl isn't available for PalmOS, nevertheless, I just found a really good page that list all the alternative (to C) languages you can use on Palm and among them LISP, Python, Javascript, Prolog, Forth and Basic.

<kbd>--
my $OeufMayo = new PerlMonger::Paris({http => 'paris.mongueurs.net'});</kbd>