126th Regiment may refer to:
126th Aviation Regiment 126th Baluchistan Infantry 126th Field Artillery Regiment 126th Infantry Regiment (France) 126th Infantry Regiment (United States) 126th Regiment of Foot
American Civil War regiments 126th Illinois Infantry Regiment 126th New York Infantry Regiment 126th Ohio Infantry Regiment 126th Pennsylvania Infantry Regiment
See also 126th Brigade (disambiguation) 126th Division (disambiguation) 126th (disambiguation)