The Third Field Army of the Chinese People's Liberation Army was one of the five main forces of the Chinese People's Liberation Army during the Chinese Civil War. It was established in early 1949. Initially known as the East China Field Army, by the New Fourth Army and the Eighth Route Army troops stationed in Shandong Province, a gradual adaptation of the expansion.
It took control of the troops in eastern China, with Chen Yi as its commander. It comprised the 7th, 8th, 9th, and 10th Corps Armies (bingtuan) plus the headquarters of the special technical troops, with a total of 580,000 men.
Forces associated with the Third Field Army included:
In August 1950 the force was redesignated the East China Military Region.