Yes, and elaborating that so it works with an anonymous sub: 
#!/usr/bin/perl
#anonysub.pl

#use strict;
#use warnings;

package foo; 
our $bar = "10\n";
our $anonysub = sub { print "10\n"};

package main; 
print $foo::bar;
&$foo::anonysub(); #before BUU's comment
$foo::anonysub->(); #after BUU's comment

[download]
outputs: 
10
10

[download]
(The syntax of the final line took me a bit of trial and error to get it right!)

UPDATE: added another way to do it as BUU suggests below, which, I agree, is cleaner.

In reply to Re^2: [ooperl] calling reference to a annonymous sub by tphyahoo
in thread [ooperl] calling reference to a annonymous sub by arunvelusamy

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