An ambassador-at-large is a diplomat, a secretary, or a minister of the highest rank who is accredited to represent a country and its people internationally.

Masna Bolkiah binti Omar Ali Saifuddien III is the sister of Sultan Hassanal Bolkiah. Princess Masna Bolkiah is considered the third most important living woman in Brunei Darussalam after Queen Saleha and Crown Princess Sarah.