| Emperor Kiến Phúc 建福帝 | |
| Father: | Nguyễn Phúc Hồng Cai (son of Thiệu Trị) |
| Mother: | Concubine Bùi Thị Thanh |
| Spouse: | None |
| Issue: | None |
| Birth Date: | February 12, 1868 |
| Birth Place: | Imperial City, Huế, Đại Nam |
| Death Date: | July 31, 1884 (age 15) |
| Death Place: | Imperial City, Huế, Đại Nam |
| Place Of Burial: | Bồi Lăng (陪陵) |
| Full Name: | Nguyễn Phúc Ưng Đăng (阮福膺登) Nguyễn Phước Hạo (阮福昊) |
| Succession: | Emperor of Đại Nam |
| Reign: | 2 December 1883 – 31 July 1884 |
| Predecessor: | Hiệp Hòa |
| Successor: | Hàm Nghi |
| Succession1: | Emperor of the Nguyễn dynasty |
| Reign1: | 2 December 1883 – 31 July 1884 |
| Predecessor1: | Hiệp Hòa |
| Successor1: | Hàm Nghi |
| Regent: | Tôn Thất Thuyết & Nguyễn Văn Tường |
| House: | Nguyễn Phúc |
| Era Name: | Kiến Phúc (建福) |
| Era Dates: | 1883–1884 |
| Temple Name: | Giản Tông (簡宗) |
| Posthumous Name: | Thiệu Đức Chí Hiếu Uyên Duệ Nghị Hoàng đế (绍德止孝渊睿毅皇帝). |
| Religion: | Ruism, Buddhism |
| Vie: | Kiến Phúc |
Kiến Phúc (pronounced as /vi/, 12 February 1869 – 31 July 1884) was a child emperor of Vietnam, who reigned for less than 8 months, 1883–1884, as the 7th emperor of the Nguyễn dynasty.
Born in 1869, also known as Nguyễn Phúc Ưng Đăng, he was the nephew-turned-adopted son of Emperor Tự Đức. He reigned for 7 months and 29 days (2 December 1883 – 31 July 1884).
| Birth name | |
| Qn: | Nguyễn Phúc Ưng Đăng |
Along with his cousin Dục Đức and brother Đồng Khánh, he had been taken in by Tự Đức who was unable to have children of his own. After the regicide of Emperor Hiệp Hoà, the court regents Tôn Thất Thuyết and Nguyễn Văn Tường acted quickly to install the fifteen-year-old prince as the new Emperor. Kiến Phúc was quickly enthroned on 1 December 1883 at five o'clock in the morning.
Emperor Kiến Phúc was often hampered by poor health and died in Kiến Thành Palace on July 31, 1884 – less than 8 months after ascending the throne.[1] His sudden death sparked rumors that the Emperor was poisoned by his adoptive mother, Tự Đức's Noble Consort Học phi and regent Nguyễn Văn Tường for he knew of their secret affair.[2]