75th Regiment

75th Regiment or 75th Infantry Regiment may refer to:


 * 75th Regiment of Foot (disambiguation), several units of the British Army
 * 75th (Middlesex) Searchlight Regiment, Royal Artillery
 * 75th Cavalry Regiment, United States
 * 75th Field Artillery Regiment, United States
 * 75th Infantry Regiment (United States)
 * 75th Infantry Regiment (Ranger), United States (1969–1986)
 * 75th Ranger Regiment (United States)
 * 75th Carnatic Infantry, British Indian Army

Union Army (American Civil War):
 * 75th Illinois Volunteer Infantry Regiment
 * 75th Indiana Infantry Regiment
 * 75th Ohio Infantry
 * 75th Pennsylvania Infantry