King Crin (Italian: La storia del Re Crin) is an Italian fairy tale collected by Antonio Arietti. Italian author Italo Calvino reworked the tale as King Crin in his work Italian Folktales.
The tale is related to the international cycle of the Animal as Bridegroom or The Search for the Lost Husband, wherein a human maiden marries a prince cursed to be an animal, loses him and has to search for him. According to scholars, the pig or swine as the form of the cursed husband is very popular in Italy.