The 115th Light Anti-Aircraft Regiment, Royal Artillery, (115th LAA Rgt) was an air defence unit of the British Army during World War II. Initially raised as an infantry battalion of the East Yorkshire Regiment, it transferred to the Royal Artillery in 1942. It served as the LAA component of 46th Division in the Tunisian Campaign, at the Salerno landings, and through the Italian Campaign until it was disbanded in 1945.