This is a list of all World of Warcraft: Wrath of the Lich King item sets. Item set is a collection of a few equipable items, in most cases parts of the armor. All sets give extra bonuses when wearing multiple pieces of the set.
Some of the item sets are not restricted by class so any class that is qualified to wear the armor type can wear them. However, many sets are aimed at specific classes due to the bonuses.