Official Names of Six Nations: Azerbaijan, China, Brunei, Bhutan, Pakistan, Oman

The formal, constitutional names of these states as used in UN, diplomatic, and legal contexts:

Common Name	Official Name (English)	Official Name (Native / Local)
Azerbaijan	Republic of Azerbaijan	Azərbaycan Respublikası (Azeri)
China	People's Republic of China	中华人民共和国 (Zhōnghuá Rénmín Gònghéguó) — Mandarin
Brunei	Brunei Darussalam (Abode of Peace)	Negara Brunei Darussalam (Malay)
Bhutan	Kingdom of Bhutan	འབྲུག་ཡུལ་ (Druk Yul) — Dzongkha ("Land of the Thunder Dragon")
Pakistan	Islamic Republic of Pakistan	اسلامی جمہوریہ پاکستان (Islāmī Jumhūriyah Pākistān) — Urdu
Oman	Sultanate of Oman	سلطنة عُمان (Salṭanat ʻUmān) — Arabic

Key Notes

Brunei Darussalam = "Brunei, Abode of Peace" (Arabic *Dār al-Salām*). Full: *Negara Brunei Darussalam*.
China — "People's Republic" since 1949. ROC (Taiwan) = Republic of China.
Pakistan — "Islamic Republic" declared 1956 constitution.
Oman — "Sultanate" reflects hereditary monarchy (Al Said dynasty since 1744).
Bhutan — "Druk Yul" used domestically; "Kingdom of Bhutan" internationally.
Azerbaijan — Secular republic; "Republic of Azerbaijan" since 1991 independence.