118th Regiment

118th Regiment or 118th Infantry Regiment may refer to:


 * 118th Regiment of Foot (disambiguation), several units of the British Army
 * 29th Commando Regiment Royal Artillery
 * 118th Infantry Regiment (United States)

Union Army (American Civil War):
 * 118th Illinois Volunteer Infantry Regiment
 * 118th New York Volunteer Infantry
 * 118th Ohio Infantry
 * 118th Pennsylvania Infantry