Lothair II (disambiguation)

Lothair II (Lothar; Lothaire; Lotario) may refer to:
 * Lothair II of Lotharingia, who was the second Lothair to rule from Aachen
 * Lothair II of Italy, who was the second Lothair to rule Italy
 * Lothair II, Holy Roman Emperor, who was the second Emperor Lothair
 * Lothair II of France, who was the second Lothair to rule from West Francia