The Muslim name for God is ALLAH, which is a five-letter word. ALLAH is the Arabic word for God and is used by Muslims to refer to the one and only God. ALLAH is also known as the Creator and Sustainer of the Universe. Muslims believe that ALLAH is the most merciful and compassionate being, and that He is the source of all good. ALLAH is also seen as the ultimate judge, who will reward or punish people based on their actions in life.