Allah is the name of the one and only God. The Quran mentions 99 beautiful names for Allah such as: The all knowing, the wise, the most merciful, and the lord of the universe, the most gracious, and others.
Allah is the creator of all human beings. He is the God of the Christians, the Jews, the Muslims, the Buddhists, the Hindus, the atheists and all human beings, whether they believe in him or not. Muslims worship Allah and put their trust in him and seek his help and his guidance.