The Workers' and Peasants' Red Army, frequently shortened to Red Army, was the army and the air force of the Russian Soviet Federative Socialist Republic and, after 1922, the Union of Soviet Socialist Republics. The army was established immediately after the 1917 October Revolution. The Bolsheviks raised an army to oppose the military confederations (especially the various groups collectively known as the White Army ) of their adversaries during the Russian Civil War. Beginning in February 1946, the Red Army, along with the Soviet Navy, embodied the main component of the Soviet Armed Forces; taking the official name of "Soviet Army ", until its dissolution in December 1991. The former official name Red Army continued to be used as a nickname by both sides throughout the Cold War.

The Red Army is a hooligan firm who follow English football club Manchester United. Although today the term Red Army is used mostly to refer to fans of the club in general, the hooligan firm have been one of the largest firms in British football. Firm members – and the firm itself – are sometimes known as the Men in Black, due to the members dressing in all black clothing. In his book Hotshot, Red Army hooligan Harry Gibson states that there are also sub-divisions of the firm known as the Young Munichs, the Inter City Jibbers (ICJ), the M58 Firm and the Moston Rats. In his book Undesirables, Colin Blaney has also stated that the ICJ is dedicated to carrying out acquisitive forms of crime in addition to football hooliganism. He claims that members of the group have been involved in smuggling drugs to Europe and Asia from Latin America and the Caribbean, organizing jail breaks, carrying out armed robberies, travelling overseas to Asia and mainland Europe in order to steal jewellery and committing street robberies. It is the criminal wing of the Red Army

Chiefly, a Red Army is a communist army. Such armies include:

Red Army Military Law Academy (later Soviet Army Military Law Academy) (Russian: Военно-юридическая академия Красной Армии (Совеской Армии)) (November 5, 1939 – May 18, 1956) was formed the base of the Military Law Department of the All-Union Law Academy.

Red Army Strait (Russian: Пролив Красной Армии , Proliv Krasnoy Army) is a strait in Severnaya Zemlya, Russia. It is named after the Red Army (Krasnaya Armiya).

Army Red serves as the one of the football teams for the Indian Army. The team regularly participates in the Durand Cup.

The Red Army of Turin was a Socialist paramilitary organisation set up in September 1919. Their role was to offer military defence to socialist organisations and meetings. One of their first engagements was on 24 September 1919 when they returned gunfire after police and soldiers opened fire on a banned open air demonstration organised by the Socialist Party of Turin against the seizure of Fiume by Italian nationalists led by Gabriele d'Annunzio.

Red Army Choir may refer to:

Red Army man (Russian: Красноармеец , translit. Krasnoarmeyets) was the lowest military rank in the Red Army of the Soviet Union from 1935 to 1946, roughly equivalent to NATO OR-1. Before 1935, it also referred to the position held by Red Army enlisted personnel.