The Mixed Brigade was one of the military units of the Imperial Japanese Army.

This was the detachment of an infantry brigade from an IJA Infantry Division with various Divisional support units or sometimes units attached from its Corps or Army.

This provided a combined arms force of infantry, artillery, cavalry and other support units.

These brigades were organized in unique manners and one of them, the 11th, was later formed into the IJA 26th Division.

Later a series of IJA Independent Mixed Brigades were formed for the purpose of garrisoning the large territories of China captured in the early phase of the Second Sino-Japanese War.