Bhutan
The RHCSO endorses the Wangchuck dynasty

HM Jigme Khesar Namgyel Wangchuck
The Druk Gyalpo, monarch of the Kingdom of Bhutan
Cambodia
The RHCSO endorses the House of Norodom

HM King Norodom Sihamoni
King of Cambodia
Japan
The RHCSO endorses the Imperial House of Japan

HM The Emperor Naruhito
126th Emperor of Japan
Laos
The RHCSO endorses the Khun Lo Dynasty

HRH Prince Soulivong Savang
Pretender to the Lao throne
Nepal
The RHCSO endorses the Shah Dynasty

HM Shree Paanch Maharajadhiraj Gyanendra Bir Bikram Shah Dev
Former monarch and last King of Nepal
Thailand
The RHCSO endorses the House of Mahidol

HM King Vajiralongkorn
King of Thailand
Vietnam
The RHCSO endorses the House of Nguyen Phuc

HRH Prince Nguyễn Phúc Bảo Ngọc
Guy Georges Vĩnh San
Head of the former Imperial House