Hoàng Diệu, born Hoàng Kim Tích (黃金錫), courtesy name Quang Viễn, was a Nguyễn dynasty Governor-general of Hà - Ninh, who suicided after failure in protecting Hà Nội citadel.

The Battle of Hanoi on 25 April 1882, was the illegal capture by French naval captain Henri Rivière, acting without his superiors' orders. The French handed the city back later.