Yên Thế Insurrection

Yên Thế Insurrection; Khởi nghĩa Yên Thế
	Part of French Indochina
	; Map of Bắc Giang Province in 1909.
Date	1884–1913
Location	Bắc Ninh, Thái Nguyên and Red River Delta of French Tonkin
Result	Victory of the French Forces : The uprising suppressed.; Yên Thế Barracks fallen.;
Belligerents
French Indochina Tonkin Infantry Regiment;	Yên Thế Barracks Trung Châu Insurgent Force; Black Flag Army Tai Canton
Commanders and leaders
Governor-General Paul Doumer; Superior-Resident Louis Jules Morel; General Voiron; Colonel Bataille; Mayor Galliéni; Official Lê Hoan	Lương Văn Nắm; Hoàng Hoa Thám; Thân Bá Phức; Đỗ Văn Hùng; Đặng Thị Nhu; Hoàng Đức Trọng; Nguyễn Thiện Tuyển; Lương Tam Kỳ; Đèo Văn Trị
Strength
2,700	15,000
Casualties and losses
?	?

The Yên Thế Insurrection or officially Yên Thế Uprising (Vietnamese: Khởi nghĩa Yên Thế) was a 25-year-long popular revolt in Yên Thế Rural District of Tonkin, against the French protectorate and in defiance of the Nguyễn Dynasty's collaborative stance.