Often one hears the Arabic word “Allah” being used in discussions regarding Islam. The word “Allah” is simply the Arabic word for Almighty God, and is the same word used by Arabic speaking Christians and Jews. As a matter of fact, the word Allah was in use far before the word God ever came into existence, since English is a relatively new language. If one were to pick up an Arabic translation of the Bible, one would see the word “Allah” being used where the word “God” is used in English. For instance, Arabic speaking Christians say that Jesus is, according to their canon belief, the Son of Allah.
In addition, the Arabic word for Almighty God, “Allah”, is quite similar to the word for God in other Semitic languages. For example, the Hebrew word for God is “Elah”. For various reasons, some non-muslims mistakenly believe that muslims worship a different God than the God of Moses and Abraham and Jesus. This is certainly not the case, since the Pure Monotheism of Islam calls all people to the worship of the God of Noah, Abraham, Moses, Jesus and all the other prophets, peace be upon them. Read The concepts of God