Combat Organization (, ) is a name that has been used by several armed political movements in Russia and Poland, including:
The Combat Organization of the Party of Socialist Revolutionaries (1902–1911) The Combat Organization of the Polish Socialist Party (1904–1911) The Bolshevik Military and Battle Organizations (1905–1918) The Jewish Combat Organization (1942–?), a Jewish partisan group active in Warsaw during WWII The Combat Terrorist Organization (2003–2006), a Russian neo-Nazi gang The Battle Organization of Russian Nationalists (2007–2011), another Russian neo-Nazi group The Combat Organization of Anarcho-Communists ( 2020–present ), a Russian anarchist organization