Fourth Army

• 20th Guards Army
• 4th Air Army
• 4th Army (Austria-Hungary)
• 4th Army (German Empire)
• 4th Army (Kingdom of Yugoslavia)
• 4th Army (RSFSR)
• 4th Army (Russian Empire)
• 4th Army (Soviet Union)
• 4th Army (Wehrmacht)
• 4th Brigade (disambiguation)
• 4th Division (disambiguation)
• 4th Guards Army
• 4th Panzer Army
• 4th Regiment (disambiguation)
• 4th Squadron (disambiguation)
• Fourth Army (Bulgaria)
• Fourth Army (France)
• Fourth Army (National Revolutionary Army)
• Fourth Army (Ottoman Empire)
• Fourth Army (Romania)
• Fourth Army (United Kingdom)
• Fourth United States Army
• IV Corps (disambiguation)
• New Fourth Army