Multiple choice general knowledge Who replaced Lockhart as the Defence against the Dark Arts Teacher? Professor Lupin Professor Moody Professor Snape Professor Trelawney Reveal answer Fill a bubble to check yourself A Correct answer Explanation Professor Remus Lupin replaced Gilderoy Lockhart as the Defense Against the Dark Arts teacher in Harry's third year at Hogwarts. Lupin was a competent and beloved teacher despite being a werewolf.