37th Regiment or 37th Infantry Regiment may refer to:
37 (Wessex and Welsh) Signal Regiment, a unit of the United Kingdom Army 37th Infantry Regiment (United States) 37th Armor Regiment (United States), a unit of the United States Army Combat Logistics Regiment 37, a unit of the United States Marine Corps
American Civil War Regiments 37th Illinois Volunteer Infantry Regiment 37th Iowa Volunteer Infantry Regiment 37th New Jersey Volunteer Infantry Regiment 37th Wisconsin Volunteer Infantry Regiment
See also 37th Division (disambiguation) 37th Brigade (disambiguation) 37th Squadron (disambiguation)