Eighth Army

Eighth Army may refer to:


 * Eighth Route Army, a Chinese Communist force that fought against the Japanese during World War II
 * Eighth Army (France)
 * 8th Army (German Empire), a World War I field Army
 * 8th Army (Wehrmacht), a World War II field army
 * Eighth Army (Italy), the Armata Italiana in Russia that fought against the Soviet Union during World War II
 * Japanese Eighth Area Army
 * Ottoman Eighth Army
 * 8th Army (Soviet Union)
 * 8th Guards Army (Soviet Union)
 * Eighth Army (United Kingdom)
 * Eighth United States Army