what is prince william and prince harry's last name
The official last name of Prince William is Mountbatten-Windsor. What's more, his full name is William Arthur Philip Louis (Prince William, Duke of Cambridge). Click for more info on Prince William, the Duke Of Cambridge. , back.
As others have mentioned, the surname of Prince Harry is Wales. This is the name he uses whilst serving in the army, and is known as Captain Wales for his rank and surname. This was shown within an edition of the UK magazine Hello in February, which had this picture of him, which confirms the answers of others: