Peter Pevensie is a major character in C.S. Lewis's Chronicles of Narnia and is the oldest of the four Pevensie children. He appears in four of the seven books: in The Lion, the Witch and the Wardrobe and Prince Caspian he is a principal character, and he makes brief but significant appearances in both The Horse and His Boy and The Last Battle.

Even before entering Narnia, Peter demonstrates his strong moral fiber. Perhaps for this reason he undergoes the least development of the major characters; his experiences in Narnia serve primarily to strengthen his innate tendency towards humility and courage. Allegorically, he represents Christian maturity and discernment, as befitting his position as King Peter the Magnificent, High King of Narnia.