Found this useful thread on displaying a category filter on a custom post type in wordpress. Here’s the code:
add_action( 'restrict_manage_posts', 'my_restrict_manage_posts' );
function my_restrict_manage_posts() {
global $typenow;
$taxonomy = 'your_custom_taxonomy_name';
if( $typenow != "page" && $typenow != "post" ){
$filters = array($taxonomy);
foreach ($filters as $tax_slug) {
$tax_obj = get_taxonomy($tax_slug);
$tax_name = $tax_obj->labels->name;
$terms = get_terms($tax_slug);
echo "";
}
}
}
WordPress › Support » Show Categories Filter on Custom Post Type List.