The word(s) "isaac" appears 17 time(s) in 16 verse(s) in Quran in Muhammad Pickthal translation.

(11) So, when he had withdrawn from them and that which they were worshipping beside Allah, We gave him isaac and Jacob. Each of them We made a prophet.

(12) And We bestowed upon him isaac, and Jacob as a grandson. Each of them We made righteous.

(13) And We bestowed on him isaac and Jacob, and We established the prophethood and the Scripture among his seed, and We gave him his reward in the world, and lo! in the Hereafter he verily is among the righteous.

(14) And we gave him tidings of the birth of isaac, a prophet of the righteous.

(15) And We blessed him and isaac. And of their seed are some who do good, and some who plainly wrong themselves.

(16) And make mention of Our bondmen, Abraham, isaac and Jacob, men of parts and vision.