Vietnamese prison guards led by Trịnh Văn Cấn mutiny at the Thái Nguyên penitentiary against local French authority.

Vietnam, officially the Socialist Republic of Vietnam (SRV), is a country at the eastern edge of mainland Southeast Asia, with an area of about 331,000 square kilometres (128,000 sq mi) and a population of over 100 million, making it the world's fifteenth-most populous country. One of two communist states in Southeast Asia, Vietnam shares land borders with China to the north, and Laos and Cambodia to the west. Its capital is Hanoi and its largest city is Ho Chi Minh City.

The Thái Nguyên Uprising or officially Thái Nguyên Mutiny in 1917 has been described as the "largest and most destructive" anti-French rebellion in Vietnam between the Pacification of Tonkin in the 1880s and the Nghetinh Rebellion of 1930–31.

Thái Nguyên is a city in Vietnam. It is the capital and largest city of Thái Nguyên Province. The city is listed as a first class city and is the ninth largest city in Vietnam. It has long been famous throughout Vietnam for its Tân Cương tea, among the most recognized Vietnamese tea regions. In 1959, it became the site of Vietnam's first steel mill, and is now home to a large and growing major regional university complex.