151st Regiment may refer to:
151st Aviation Regiment 151st Cavalry Regiment 151st Infantry Regiment (United States) 151st Infantry Regiment "Sassari" 151st Regiment Royal Armoured Corps 151st (Ayrshire Yeomanry) Field Regiment, Royal Artillery 151 Regiment RLC
American Civil War regiments 151st Illinois Infantry Regiment 151st Indiana Infantry Regiment 151st New York Infantry Regiment 151st Ohio Infantry Regiment 151st Pennsylvania Infantry Regiment
See also 151st Division (disambiguation)