The word(s) "religion" appears 156 time(s) in 129 verse(s) in Quran in Mohsin Khan translation.

(71) But they have broken up and differed as regards their religion among themselves. (And) they all shall return to Us.

(72) And they are guided (in this world) unto goodly speech (i.e. La ilaha illallah, Alhamdu lillah, recitation of the Qur'an, etc.) and they are guided to the Path of Him (i.e. Allah's religion of Islamic Monotheism), Who is Worthy of all praises.

(73) For every nation We have ordained religious ceremonies [e.g. slaughtering of the cattle during the three days of stay at Mina (Makkah) during the Hajj (pilgrimage)] which they must follow; so let them (the pagans) not dispute with you on the matter (i.e. to eat of the cattle which you slaughter, and not to eat of the cattle which Allah kills by its natural death), but invite them to your Lord. Verily you (O Muhammad صلى الله عليه وسلم) indeed are on the (true) straight guidance (i.e. the true religion of Islamic Monotheism).

(74) And strive hard in Allah's Cause as you ought to strive (with sincerity and with all your efforts that His Name should be superior). He has chosen you (to convey His Message of Islamic Monotheism to mankind by inviting them to His religion of Islam), and has not laid upon you in religion any hardship: it is the religion of your father Ibrahim (Abraham) (Islamic Monotheism). It is He (Allah) Who has named you Muslims both before and in this (the Qur'an), that the Messenger (Muhammad صلى الله عليه وسلم) may be a witness over you and you be witnesses over mankind! So perform As-Salat (Iqamat-as-Salat), give Zakat and hold fast to Allah [i.e. have confidence in Allah, and depend upon Him in all your affairs]. He is your Maula (Patron, Lord), what an Excellent Maula (Patron, Lord) and what an Excellent Helper!

(75) And verily this your religion (of Islamic Monotheism) is one religion, and I am your Lord, so fear (keep your duty to) Me.

(76) But they (men) have broken their religion among them into sects, each group rejoicing in what is with it (as its beliefs).

(77) Or say they: There is madness in him? Nay, but he brought them the truth [i.e. Tauhid: Worshipping Allah Alone in all aspects, the Qur'an and the religion of Islam], but most of them (the disbelievers) are averse to the truth.

(78) And certainly, you (O Muhammad صلى الله عليه وسلم) call them to the Straight Path (true religion - Islamic Monotheism).

(79) And verily, those who believe not in the Hereafter are indeed deviating far astray from the Path (true religion - Islamic Monotheism).

(80) (This is) a Surah (chapter of the Qur'an) which We have sent down and which We have enjoined, (ordained its laws); and in it We have revealed manifest Ayat (proofs, evidence, verses, lessons, signs, revelations - lawful and unlawful things, and set boundaries of Islamic religion), that you may remember.