(, 同慶, lit. "collective celebration"; 19 February 1864 – 28 January 1889), born
of Vietnam. He reigned four years between 1885 and 1889. His royal temple name was Cảnh Tông (景宗).
Biography
Đồng Khánh was born on 19 February 1864 in the Imperial City of Huế. His childhood name was Chánh Mông because he was brought up in Chánh Mông palace. Đồng Khánh was the eldest son of Prince Nguyễn Phúc Hồng Cai, a son of emperor Thiệu Trị, and his concubine Bùi Thị Thanh.
As his uncle, Emperor Tự Đức, had no children, Đồng Khánh was adopted and given the title Kiên Giang quận công (Duke of Kiên Giang).
Rule
After the French armies captured the city of Huế and the Imperial city fell to the French, the court regents Nguyễn Văn Tường and Tôn Thất Thuyết took the young Emperor Hàm Nghi and escaped from the Purple Forbidden City of Huế, and took him to Tân Sở in the mountains as the figurehead of a revolutionary movement against the French. To take away the legitimacy of Hàm Nghi, general de Courcy and résident de Champeaux of France asked the empress dowager Nghi Thiên to enthrone Hàm Nghi's elder half brother prince Nguyễn Phúc Ưng Kỷ. On 19 September 1885 with the backing of the governor of Annam, Prince Nguyễn Phúc Ưng Kỷ was crowned as the ninth emperor of Đại Nam with the era name of Đồng Khánh.
File:Kt-hue-7.jpg|Welcome ceremony of French diplomats by Emperor Đồng Khánh at Thái Hòa throne hall (太和殿), 1886
Đồng Khánh was pro-French, which was noted in the diary of Trần Trọng Kim:
Death
On 28 January 1889, Đồng Khánh died
aged 24 after reigning for three years. He was granted the posthumous name Hoằng Liệt Thông Thiết Mẫn Huệ Thuần Hoàng Đế (弘烈聰哲敏惠純皇帝), with the temple name Cảnh Tông (景宗).
File:Mausoleum of Emperor Dong Khanh (Hue) - Lăng Đồng Khánh (2024 July) - img 20.jpg|Main gate to mausoleum of Đồng Khánh .
File:Mausoleum of Emperor Dong Khanh (Hue) - Lăng Đồng Khánh (2024 July) - img 06.jpg|Main temple of mausoleum, Ngưng Hy Điện(凝禧殿)
File:Tomb of DongKhanh4.JPG| Stele house in mausoleum of Đồng Khánh
File:Tomb of DongKhanh6.JPG| Statues of mandarins and elephants
In 1916, his son the Emperor Khải Định granted him the name Phối Thiên Minh Vận Hiếu Đức Nhân Vũ Vĩ Công Hoằng Liệt Thông Thiết Mẫn Huệ Thuần Hoàng Đế (配天明運孝德仁武偉功弘烈聰哲敏惠純皇帝). He was buried in Tư Lăng mausoleum (思陵), which is located at Dương Xuân Thượng village, Hương Thuỷ commune, Thừa Thiên Province.
Gallery
File:Dong Khanh.jpg|Posthumous portrait of Emperor Đồng Khánh.
File:DongKhanh.jpg|Emperor Đồng Khánh on his throne.
File:Hựu Thiên Thuần Hoàng Hậu.jpg|Empress consort Hựu Thiên, wife of Đồng Khánh
File:Phụ Thiên Thuần Hoàng hậu.jpg|Empress consort Phụ Thiên, wife of Đồng Khánh