| Head of State | HM King Charles III | | Your Majesty |
| Governor General | HE Sir Tom John Marsters KBE | Queen's Representative | Your Excellency |
| Head of Government | Hon Mark Brown | Prime Minister | Dear Prime Minister |
| Foreign Minister | Hon Mark Brown | Prime Minister and Minister of Foreign Affairs | Dear Prime Minister |
| Trade Minister | Hon Mark Brown | Prime Minister, Foreign Minister and Minister of Finance and Economic Management | Dear Prime Minister |