Hide a user in People List
Put this in a custom module and it will effectively remove User 1 from the People list, but only there.

/**
 * Implements hook_form_FORM_ID_alter().
 */
function mymodule_form_user_admin_account_alter(&amp;$form, &amp;$form_state, $form_id) {
  unset($form['accounts']['#options'][1]);
}


But as Free Radical pointed out, if you say why there might be better solutions.

Cheers,