Fourth Army

Fourth Army or 4th Army may refer to:

Germany

 * 4th Army (German Empire), a World War I field Army
 * 4th Army (Wehrmacht), a World War II field army
 * 4th Panzer Army

Russia - Soviet Union

 * 4th Army (Russian Empire)
 * 4th Army (RSFSR)
 * 4th Army (Soviet Union)
 * 4th Air Army, Soviet Union and Russia
 * 4th Guards Army, Soviet Union
 * 4th Tank Army, Soviet Union

Others

 * 4th Army (Austria-Hungary)
 * Fourth Army (Bulgaria)
 * Fourth Army (National Revolutionary Army), Republic of China
 * New Fourth Army, Republic of China
 * Fourth Army (France)
 * Fourth Army (Italy)
 * Fourth Army (Japan)
 * Fourth Army (Ottoman Empire)
 * Fourth Army (Romania)
 * Fourth Army (United Kingdom)
 * Fourth United States Army
 * 4th Army (Kingdom of Yugoslavia)