The word(s) "isaac" appears 16 time(s) in 16 verse(s) in Quran in Mohsin Khan translation.

(11) So when he had turned away from them and from those whom they worshipped besides Allah, We gave him Ishaq (isaac) and Ya'qub (Jacob), and each one of them We made a Prophet.

(12) And We bestowed upon him Ishaq (isaac), and (a grandson) Ya'qub (Jacob). Each one We made righteous.

(13) And We bestowed on him [Ibrahim (Abraham)], Ishaq (isaac) and Ya'qub (Jacob), and We ordained among his offspring Prophethood and the Book [i.e. the Taurat (Torah) (to Musa - Moses), the Injeel (Gospel) (to 'Îsa - Jesus), and the Qur'an (to Muhammad صلى الله عليه وسلم), all from the offspring of Ibrahim (Abraham)], and We granted him his reward in this world; and verily, in the Hereafter he is indeed among the righteous.

(14) And We gave him the glad tidings of Ishaq (isaac) - a Prophet from the righteous.

(15) We blessed him and Ishaq (isaac). And of their progeny are (some) that do right, and some that plainly wrong themselves.

(16) And remember Our slaves, Ibrahim (Abraham), Ishaq (isaac), and Ya'qub (Jacob), (all) owners of strength (in worshipping Us) and (also) of religious understanding.