The word(s) "oneness" appears 187 time(s) in 175 verse(s) in Quran in Mohsin Khan translation.

(131) "You invite me to disbelieve in Allah (and in His oneness), and to join partners in worship with Him of which I have no knowledge; and I invite you to the All-Mighty, the Oft-Forgiving!

(132) Verily, We will indeed make victorious Our Messengers and those who believe (in the oneness of Allah - Islamic Monotheism) in this world's life and on the Day when the witnesses will stand forth, (i.e. Day of Resurrection) -

(133) The Day when their excuses will be of no profit to Zalimun (polytheists, wrong-doers and disbelievers in the oneness of Allah). Theirs will be the curse, and theirs will be the evil abode (i.e. painful torment in Hell-fire).

(134) And not equal are the blind and those who see; nor are (equal) those who believe (in the oneness of Allah - Islamic Monotheism), and do righteous good deeds, and those who do evil. Little do you remember!

(135) And your Lord said: "Invoke Me, [i.e. believe in My oneness (Islamic Monotheism) and ask Me for anything] I will respond to your (invocation). Verily! Those who scorn My worship [i.e. do not invoke Me, and do not believe in My oneness, (Islamic Monotheism)] they will surely enter Hell in humiliation!"

(136) And He shows you His Ayat (signs and proofs) (of His oneness in all the above-mentioned things). Which, then of the Ayat (signs and proofs) of Allah do you deny?

(137) Giving glad tidings [of Paradise to the one who believes in the oneness of Allah (i.e. Islamic Monotheism) and fears Allah much (abstains from all kinds of sins and evil deeds) and loves Allah much (performing all kinds of good deeds which He has ordained)], and warning (of punishment in the Hell-Fire to the one who disbelieves in the oneness of Allah), but most of them turn away, so they hear not.

(138) Say (O Muhammad صلى الله عليه وسلم): "I am only a human being like you. It is revealed to me that your Ilah (God) is One Ilah (God - Allah), therefore take Straight Path to Him (with true Faith - Islamic Monotheism) and obedience to Him, and seek forgiveness of Him. And woe to Al-Mushrikun (the polytheists, idolaters, disbelievers in the oneness of Allah).

(139) Truly, those who believe (in the oneness of Allah, and in His Messenger Muhammad صلى الله عليه وسلم - Islamic Monotheism) and do righteous good deeds, for them will be an endless reward that will never stop (i.e. Paradise).

(140) And who is better in speech than he who [says: "My Lord is Allah (believes in His oneness)," and then stands firm (acts upon His Order), and] invites (men) to Allah's (Islamic Monotheism), and does righteous deeds, and says: "I am one of the Muslims."