Who gave the Qur’anic chapters their names?

The present names of the Qur’anic chapters were conveyed by Prophet Muhammad, peace and blessings be upon him, under God’s direction. Accordingly, neither the Companions nor the following generations were authorized to change or replace them.

 

Akgul, Muhittin (2009). The Quran in 99 Questions (Abdullah Erdemli Trans.). New Jersey: Tughra Books. (Originally published in Turkish as Kur’an İklimine Seyahat)