The name of the lion in the book series The Chronicles of Narnia is Aslan. In the novels, Aslan is regarded as the king of Narnia.
The Chronicles of Narnia is a series of seven novels written by C.S. Lewis. The story takes place in the titular fantasy world of Narnia, where there are many mystical creatures and talking animals. The first book, "The Lion, the Witch, and the Wardrobe," was published in 1950 and the final one, "The Last Battle" was published in 1956. Since then, the books have sold over 100 million copies and been turned into three films.