27th Cavalry may refer to:
Divisions 27th Cavalry Division (Soviet Union)
Regiments 27th Cavalry Regiment (United States) 27th Light Cavalry, India 27th Texas Cavalry Regiment, Confederate States Army
Companies 27th (Devonshire) Company, Imperial Yeomanry
See also 27th Division (disambiguation) 27th Brigade (disambiguation) 27th Regiment (disambiguation) 27th (disambiguation)