Second Army or 2nd Army may refer to:
Germany
2nd Army (German Empire), a World War I field army
2nd Army (Wehrmacht), a World War II field army
2nd Panzer Army
Russia / Soviet Union
2nd Army (Russian Empire), fought at Tannenberg in 1914
2nd Army (RSFSR), fought in the Russian Civil War
2nd Ukrainian Soviet Army, fought in the Russian Civil War
2nd Red Banner Army, a Soviet field army of World War II
Others
II Army (Argentina) Second Army (Australia) 2nd Army (Austria-Hungary) Second Army (Bulgaria) Second Army (Egypt) Second Army (France) Second Army (Hungary) Second Army (Italy) Second Army (Japan) Second Army (Ottoman Empire) Second Army (Poland) Second Army (Romania) Second Army (Serbia) Second Army (Turkey) Second Army (United Kingdom) Second Army (Home Forces), also in the United Kingdom 2nd Army (Kingdom of Yugoslavia) Second United States Army
See also
II Corps (disambiguation) Second Army Corps (Spanish-American War) 2nd Guards Army 2nd Guards Tank Army 2nd Division (disambiguation) 2nd Brigade (disambiguation) 2nd Regiment (disambiguation)
