All seven of Voldemort's Horcruxes were eventually destroyed by Harry Potter and his allies. Dumbledore guessed that Voldemort was utilizing Horcruxes when Harry first brought the diary back to him ...

Well, all of the Horcruxes so far except one ’ the diary ... the sister of the best friend of Voldemort's arch nemesis, Harry Potter. Ultimately, Lucius basically handed the diary to Harry ...

Harry and his allies succeeded in destroying all seven of Voldemort's Horcruxes. In Harry Potter and the Chamber of Secrets, Voldemort’s first Horcrux is introduced as his youth diary ...