The Battle of Mạo Khê (), occurring from March 23 to March 28, 1951, was a significant engagement in the First Indochina War between the French Union and the Việt Minh. The French Union forces, led by World War II hero Jean de Lattre de Tassigny, inflicted a defeat on Việt Minh forces, which were commanded by General Võ Nguyên Giáp. The French Union victory, however, was not decisive and the Việt Minh would attack again shortly afterwards.