Profile2 , change page title
To change the content title (defaults to the username) you can use this snippet in a custom module:

&lt;?php
function MYMODULE_custom_menu_alter(&amp;$items) {
 $items['user/%user']['title callback'] = MYMODULE_user_page_title;
}

function MYMODULE_user_page_title() {

if(arg(0) == 'user') {
// Load uid from url
$user = user_load(arg(1));
// Load profile2 entity
$profile2 = profile2_load_by_user($user-&gt;uid);
// Load fields
$myfield = field_get_items('profile2', $profile2['main'], 'field_myfield');
$output = $myfield[0]['safe_value'];
}

// Fallback to username if no fields are present
if(empty($output)) {
   $output = $user-&gt;name;
 }

return $output;

}
?&gt;


Reference : http://drupal.org/node/1262070, Change page title on user-profile using a field value from Profile2