An Emperor His Imperial Majesty Akihito Emperor of Japan Address
Your dignified Majesty:
I have the honour to remain, Your Imperial Majesty's obedient servant,
"Your Majesty" first, then "Sire"
A KingHis Majesty Juan Carlos King of Spain Address
Your Majesty/Sire:
I have the honour to remain, Your Majesty's obedient servant,
"Your Majesty" first, then "Sire"
A Queen Her Majesty Queen Sophia Queen of Spain Address
Your Majesty/ Madame:
I have the honour to remain, Your Majesty's obedient servant,
"Your Majesty" first, then "Ma'am"
A Prince / Princess
With title "Royal Highness"His Royal Highness The Prince of the Asturies
Your Royal Highness:
I remain, Your Royal Highness, Yours very truly,
"Your Royal Highness" first, then "Sir/Ma'am"
With title "Serene Highness"His Serene Highness The Prince of Monaco
Your Serene Highness:
I remain, Your Serene Highness, Yours very truly,
"Your Serene Highness" first, then "Sir/Ma'am"
Without title "Highness"Prince Alexandre de Merode Princess (full name)
Prince: Madame:
Yours very truly, Yours very truly,
"Prince" first, then "Sir" "Princess" first, then "Madam"
A President of a RepublicHis/Her Excellency (full name) President of the Republic of (name) Address
Excellency:
Yours sincerely,
"Excellency" first, then "President" or "Sir/Madam"
The President of the United StatesHis Excellency the Honourable (full name) President of the United States The White House Washington, D.C.
Dear Mr. President:
Yours sincerely,
"Mr. President" or "Excellency" first then "Sir"
A Prime MinisterHis/Her Excellency (full name) Prime Minister of (name) Address
Dear Prime Minister:
Yours sincerely,
"Prime Minister" or "Excellency" first, then "Sir/Madam" or "Mr./Mrs./Ms./ Miss (name)"
Ambassadors/high commissioners of foreign countries in CanadaHis/Her Excellency (full name) Ambassador of ________/ High Commissioner for____________* Address * One exception: British High Commissionerand not High Commissioner for Britain