The concept of God and the names used to refer to God vary greatly among different religions and belief systems around the world. The name of the only true God, if any, is a matter of faith and depends on one's religious or spiritual beliefs.
In monotheistic religions like Christianity, the name used to refer to the only true God is "God" or "Yahweh" in the Hebrew tradition. In Islam, the name for the only true God is "Allah." Other religions may have their own names for the supreme being they worship.
It's essential to recognize and respect the diversity of beliefs and practices when discussing matters of religion and spirituality. Different cultures and religions have different perspectives on the concept of God, and it's essential to approach these topics with openness and sensitivity.