Neville Longbottom Could Be The Chosen One If Voldemort Wanted

It's well known among the Potterheads that Harry Potter was the chosen one but very few actually know that he became the chosen one only after Voldemort marked him as his equal (by attacking him) and that if fact, Neville Longbottom had the same chances of being the chosen one as Harry. 

For explanation, let's first discuss the prophecy itself. The prophecy goes as: The one with the power to vanquish the Dark Lord approaches ... born to those who have thrice defied him, born as the seventh month dies... and the Dark Lord will mark him as his equal, but he will have power the Dark Lord knows not... and either must die at the hand of the other for neither can live while the other survives ... the one with the power to vanquish the Dark Lord will be born as the seventh month dies…

If you read it correctly, it never talked specifically about Harry Potter, rather a kid born at the end of July, whose parents had defied Voldemort thrice. Both Harry and Neville were born at the end of July and to those who had defied Voldemort thrice, parents of both of them had fought Voldemort the same number of times as they were a part of Dumbledore's army. So the prophecy talked about both of them; what matters is who Voldemort had marked as his equal.

Voldemort thought Harry was the chosen one and went after him, attacked him, and died himself (because of protection Harry's mother put on Harry as she sacrificed herself for him). This is how Harry Potter became the chosen one.

____________________________________

Warner Bros. is currently working on Harry Potter's prequel series, the Fantastic Beasts which tells the story of Dumbledore and his lover-turned-enemy, Gellert Grindelwald.