The word(s) "sign" appears 351 time(s) in 320 verse(s) in Quran in Mohsin Khan translation.

(291) And in your creation, and what He scattered (through the earth) of moving (living) creatures are signs for people who have Faith with certainty.

(292) And in the alternation of night and day, and the provision (rain) that Allah sends down from the sky, and revives therewith the earth after its death, and in the turning about of the winds (i.e. sometimes towards the east or north, and sometimes towards the south or west sometimes bringing glad tidings of rain etc., and sometimes bringing the torment), are signs for a people who understand.

(293) This (Qur'an) is a guidance. And those who disbelieve in the Ayat (proofs, evidence, verses, lessons, signs, revelations) of their Lord, for them there is a painful torment of Rijz (a severe kind of punishment).

(294) And has subjected to you all that is in the heavens and all that is in the earth; it is all as a favour and kindness from Him. Verily, in it are signs for a people who think deeply.

(295) And indeed We had firmly established them with that wherewith We have not established you (O Quraish)! And We had assigned them the (faculties of) hearing (ears), seeing (eyes), and hearts; but their hearing (ears), seeing (eyes), and their hearts availed them nothing since they used to deny the Ayat (Allah's Prophets and their Prophethood, proofs, evidence, verses, signs, revelations) of Allah, and they were completely encircled by that which they used to mock at!

(296) And indeed We have destroyed towns (populations) round about you, and We have (repeatedly) shown (them) the Ayat (proofs, evidence, verses, lessons, signs, revelations, etc.) in various ways that they might return (to the truth and believe in the Oneness of Allah - Islamic Monotheism).

(297) Do they then await (anything) other than the Hour, that it should come upon them suddenly? But some of its portents (indications and signs) have already come; and when it (actually) is on them, how can they benefit then by their reminder?

(298) Allah has promised you abundant spoils that you will capture, and He has hastened for you this, and He has restrained the hands of men from you: that it may be a sign for the believers, and that He may guide you to the Straight Path.

(299) And on the earth are signs for those who have Faith with certainty.

(300) And We have left there a sign (i.e. the place of the Dead Sea in Palestine) for those who fear the painful torment.