Harry Potter’s middle name in J.K. Rowling’s books is James.
His full name is Harry James Potter. James was also the name of Harry’s father, James Potter, who attended Hogwarts with Sirius Black, Remus Lupin and Peter Pettigrew. Harry’s name therefore connects him directly to his family history as well as to the central plot of the series.
Harry’s father was killed by Lord Voldemort in 1981, when Harry was an infant. Harry later learns more about James through memories, conversations and the story of his parents’ school years. James’s name is also used for Harry’s son, James Sirius Potter, who appears in the epilogue of Harry Potter and the Deathly Hallows.
The middle name is sometimes overlooked because the character is almost always called simply Harry Potter.