 <p>WordPress doesn't have <code>wp_dropdown_posts</code> just like it has <code>wp_dropdown_categories</code> and <code>wp_dropdown_users</code>.</p> <p>It has to be made by hand with <code>get_posts</code> or <code>WP_Query</code>, loop the results and make the <code>&lt;select&gt;&lt;option&gt;</code>. For your use case, I think you'll need to use the <a href="http://codex.wordpress.org/Class_Reference/WP_Query#Custom_Field_Parameters" rel="nofollow">Custom Fields parameters</a>.</p> <p>You can find a sample code at WPSE: <a href="http://wordpress.stackexchange.com/q/34320/12615">Dropdown list of a custom post type</a>.</p>