The 3rd Manchurian Army (Russian: 3-й Маньчжурская армия / 3 МА) was a field army of the Russian Empire that was established in 1904 during the Russo-Japanese War, to operate in Manchuria against Japan.

[1] The 3rd Manchurian Army was created in December 1904 under command of General Alexander von Kaulbars.

It counted 72 Battalions, 19 Squadrons, 266 guns and a total of 56,773 men.

[2] On February 12, 1905, General Alexander Bilderling took over command of the Army, followed by Mikhail Batyanov in May 1905.

After the end of the War, the 3rd Manchurian Army was disbanded in February 1906.