The word(s) "one god" appears 1 time(s) in 57 verse(s) in Quran in Mohsin Khan translation.

(41) Fir'aun (Pharaoh) said: "O chiefs! I know not that you have an ilah (a god) other than me. So kindle for me (a fire), O Haman, to bake (bricks out of) clay, and set up for me a Sarh (a lofty tower, or palace) in order that I may look at (or look for) the Ilah (god) of Musa (Moses); and verily, I think that he [Musa (Moses)] is one of the liars."

(42) And We shall take out from every nation a witness, and We shall say: "Bring your proof." Then they shall know that the truth is with Allah (Alone), and the lies (false gods) which they invented will disappear from them.

(43) And invoke not any other ilah (god) along with Allah: La ilaha illa Huwa (none has the right to be worshipped but He). Everything will perish save His Face. His is the Decision, and to Him you (all) shall be returned.

(44) And indeed We sent Nuh (Noah) to his people, and he stayed among them a thousand years less fifty years [inviting them to believe in the oneness of Allah (Monotheism), and discard the false gods and other deities]; and the Deluge overtook them while they were Zalimun (wrong-doers, polytheists, disbelievers).

(45) And argue not with the people of the Scripture (Jews and Christians), unless it be in (a way) that is better (with good words and in good manner, inviting them to Islamic Monotheism with His Verses), except with such of them as do wrong; and say (to them): "We believe in that which has been revealed to us and revealed to you; our Ilah (god) and your Ilah (god) is one (i.e. Allah), and to Him we have submitted (as Muslims)."

(46) Say (O Muhammad صلى الله عليه وسلم): "Tell me or inform me (what) do you think about your (so-called) partner-gods to whom you call upon besides Allah? Show me, what they have created of the earth. Or have they any share in the heavens? Or have We given them a Book, so that they act on clear proof therefrom? Nay, the Zalimun (polytheists and wrong-doers) promise one another nothing but delusions."

(47) And that you should worship Me [Alone - Islamic Monotheism, and set up not rivals, associate-gods with Me]. That is the Straight Path.

(48) Verily your Ilah (god) is indeed one (i.e. Allah):

(49) "Has he made the alihah (gods) (all) into one Ilah (god - Allah). Verily, this is a curious thing!"

(50) Say (O Muhammad صلى الله عليه وسلم): "I am only a warner and there is no Ilah (god) except Allah (none has the right to be worshipped but Allah) the one, the Irresistible,