As mentioned in Quran, the Muslims holy book, God (Allah) is who named His believers by Muslims.
Quran says (meaning English translation)
"When his Lord said to him (to Ibrahim or Abraham), Be a Muslim, he said: I submit myself to the Lord of the worlds. (131) And the same did Ibrahim enjoin on his sons and (so did) Yaqoub (Jacob). O my sons! surely Allah has chosen for you (this) faith, therefore die not unless you are Muslims.(132)"
[Quran. chapter 2, verse 132]
They Called Muslims
"Muslims" is the name given to believers in the religion called "Islam".
they are called Muslims.
The holy book that Muslims read is called the Quran.
Saracens.
The believers of Islam are called Muslims
The mats that the Muslims use for worship are called prayer mats. In the Islamic culture, the name for the prayer mat is sajjada.
The position that Muslims assume during their prayer is called "sujood" or "prostration."
Infidels Correction: Muslims called Christians Infidels. Christians called Muslims Saracens.
They have different name in various languages. In Urdu they are called Minars.
This derogatory name for Muslims is derived from the fact that they are followers of the prophet Muhammad. However, Muslims believe this slang term to be disrespectful of God to whom they attribute having given them the name Muslims (followers of Islam).
If you are talking about nomadic Muslims in the desert, they are called bedouins. (pronounced bedu-wins) I think they are called kurds