* Confirmed Uses by Named Characters:
* Voldemort: We know he uses it numerous times throughout the book, especially during the Battle of Hogwarts.
* Severus Snape: He kills Dumbledore with Avada Kedavra.
* Bellatrix Lestrange: She kills Dobby with Avada Kedavra.
* The Death Eaters: Many Death Eaters use the curse during the Battle of Hogwarts. However, the book doesn't specify the exact number.
* Unconfirmed Uses:
* Other Death Eaters: It's highly likely other Death Eaters use the curse during the battle, but the book doesn't detail each instance.
Therefore, it's impossible to give a definitive number. However, we know for sure that at least four named characters use Avada Kedavra, and many more Death Eaters likely use it during the battle.
It's important to remember that the number of times the Death Curse is used is less important than its significance in the story. It represents the ultimate act of violence and the dark power of Voldemort and his followers.