614th

614th may refer to:


 * 614th (Devon) Fortress Company, Royal Engineers, a volunteer unit of Britain's Royal Engineers dating back to 1862
 * 614th Air and Space Operations Center, a United States Air Force operations center
 * 614th Radar Squadron, an inactive United States Air Force unit, last assigned to Cherry Point Marine Corps Air Station, North Carolina
 * 614th Space Intelligence Squadron, unit located at Vandenberg AFB, California
 * 614th Space Operations Squadron (614 SOPS) was a squadron of the United States Air Force (USAF) under Air Force Space Command (AFSPC)
 * 614th Tactical Fighter Squadron, inactive United States Air Force unit
 * 614th Tank Destroyer Battalion, tank destroyer battalion of the United States Army active during the Second World War
 * The 614th Commandment, propounded by Emil Fackenheim (1916–2003), noted Jewish philosopher and Reform rabbi