Shaitan's real name is Iblis.
In Islamic theology, Iblis (Arabic: إِبْلِيسْ) is the name given to the leader of the devils (shayāṭīn). He is a figure who refused to prostrate himself before Adam when commanded by God, leading to his expulsion from Heaven. While "Shaitan" (Satan) is often used as a generic term for devils or tempters, Iblis is considered the proper name for the specific entity known as the Devil in Islam. Therefore, the term 'Shaitan' is more of a title or description, whereas Iblis is his given name.
Therefore, referring to him, using Iblis is addressing him by his proper name.