105th Regiment may refer to:
American Civil War regiments 105th Illinois Infantry Regiment 105th Indiana Infantry Regiment 105th New York Infantry Regiment 105th Ohio Infantry Regiment 105th Pennsylvania Infantry Regiment
Other uses 105th Regiment of Foot (disambiguation), British Army regiments 105th Fighter-Bomber Aviation Regiment 105th Cavalry Regiment, US Army 105th Infantry Regiment (United States) 105th Infantry Regiment (PA), Philippine Commonwealth Army 105th Regiment Royal Artillery 105th Light Anti-Aircraft Regiment, Royal Artillery
See also 105th Regiment F.C., a football club 105th Brigade (disambiguation) 105th Division (disambiguation)