http://pedal-blog.2-d.jp/custom-menu-shortcode/
ありがたい記事から引用
function single_page_custom_menu($atts, $content = null) {
extract(shortcode_atts(array('menu' => '', 'echo' => true), $atts));
return wp_nav_menu( array('menu' => $menu, 'echo' => false));
}
add_shortcode("customenu", "single_page_custom_menu");
[customenu menu="test01"]
