Forms of address used in the Commonwealth of Australia are given below.
Forms of Address PositionOn envelopesSalutation in letterOral addressKingHM The King"Your Majesty""Your Majesty", and thereafter as "Sir"QueenHM The Queen"Your Majesty""Your Majesty", and thereafter as "Ma'am"Governor-GeneralHis/Her Excellency the Honourable, Governor-Generale.g. His Excellency General the Honourable David Hurley, Governor-General of the Commonwealth of Australia"Your Excellency" or "Dear Governor-General""Your Excellency", and thereafter as "Sir/Ma'am"Wife of the Governor-GeneralHer Excellencye.g. Her Excellency Mrs Hurley"Your Excellency" or "Dear [Title][Surname]"e.g. Dear Mrs Hurley"Your Excellency", and thereafter as "Ma'am" or "[Title][Surname]"Australian GovernorsHis/Her Excellency"Your Excellency""Your Excellency", and thereafter as "Sir/Ma'am"Administrators of Australian territoriesHis/Her Honour"Your Honour""Your Honour" and thereafter as "Sir/Ma'am"Australian dukes and duchessesHis Grace the Duke of [peerage]e.g. His Grace the Duke of Manchester"Your Grace""Your Grace" and thereafter as "Sir/Ma'am" or "Duke/Duchess"Members of the nobility and titled commonersHis/Her Lordship/Ladyshipe.g. His Lordship the Earl of Stradbrokee.g. Lady Elisa Dunmore in the case of a titled commoner"My Lord/Lady""My Lord/Lady", and thereafter as "Sir/Ma'am"Sons and daughters of Barons The Honourable [name]e.g. Dr the Honourable Robert Bailieu"Honourable""Sir/Ma'am" Ministers of the Crown, judges, magistratesThe Honourable, [Ministerial title], His/Her Honour Judge [name]"Honourable" "Sir/Ma'am" in the case of a minister, "Your honour" in the case of a judge or magistrate
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