Jones, 70, recently attended a charity event for Prince Charles' The Prince's Trust.
He admitted he would jump at the chance to perform at Prince William and Kate Middleton's wedding.
According to UK newspaper The Sun, he said: 'People all over the world are excited about the wedding and I'm one of them.
'I've always been a royalist and always will be. If they invite me along to the wedding I'd happily sing a few songs.'
Singer Paloma Faith and Barry Humphries, famous for his character Dame Edna, also attended the recent event.