Muggles are non-magical folk. They are the everyday people we see in our towns and cities, working in offices, shops, hospitals and restaurants. They have no magical ability and are generally ignorant of the magical community. A small number of Muggles are aware of witches and wizards, usually because they have magical relations. When a new Muggle Prime Minister starts their term of government, the Minister of Magic appears in their office and informs them of the wizarding world. This is to ensure both Muggles and magical governments work cohesively for the people everywhere, regardless of magical ability.