Landulf V (died September 1033) was the prince of Benevento from May 987, when he was first associated with his father Pandulf II, to his death.
Landulf was forced to make submission to the Byzantine Empire, whose Italian catepan Boioannes had rebuilt the fortified city of Troia nearby.
After showing submission to the Holy Roman Emperor, Landulf is not mentioned in records until his death in September 1033.
Forced to make submission to both Byzantium and then Henry II, Benevento could hardly claim even de facto independence any longer.
Furthermore, the lengthy period (47 years) of his rule saw the beginnings of a Byzantine resurgence in Apulia and the Lombard response.