Answer (1 of 2): As Steve Jones has already pointed out, Harry was an unintentionally created horcrux. Voldemort had a conversation with Horace Slughorn from which he got confirmation that there's no restriction on the number of horcruxes, and as he felt that 7 is a magical number, he decided to
Does Harry Potter or The Lord of the Rings portray magic better? - Quora
What are all of Voldemort's Horcruxes? - Quora
At the end of Deathly Hallows, if Harry was a horcrux, how could he survive Voldemort attacking him with the Avada Kedavra curse in the forest? - Quora
What was the significance of the Four Founders' Objects, before three of them were made into Horcruxes? I know what the Sword and the Diadem did, but the other two? - Quora
Will Voldemort return? Is there a lost Horcrux? - Quora
Can you list all of Voldemort's Horcruxes and who he killed to make each one? - Quora
Is Harry Potter the heir of Slytherin? - Quora
All 7 Horcruxes In Harry Potter & How They Were Destroyed, rowena ravenclaw supernatural
How would YOU have written Harry Potter? - Quora
If all Horcruxes were near indestructible and Harry was a Horcrux, how was he not indestructible as well? - Quora
How long did Harry, Hermione, and Ron run from Voldemort before returning to Hogwarts in the Deathly Hallows? - Quora
What happened to Harry Potter's ability to speak Parseltongue when Lord Voldemort killed the Horcrux within Harry? - Quora
What if Tom Riddle never created Horcruxes? - Quora