The word(s) "thanks" appears 25 time(s) in 25 verse(s) in Quran in Muhammad Habib Shakir translation.

(21) And We have enjoined on man doing of good to his parents; with trouble did his mother bear him and with trouble did she bring him forth; and the bearing of him and the weaning of him was thirty months; until when he attains his maturity and reaches forty years, he says: My Lord! grant me that I may give thanks for Thy favor which Thou hast bestowed on me and on my parents, and that I may do good which pleases Thee and do good to me in respect of my offspring; surely I turn to Thee, and surely I am of those who submit.

(22) A favor from Us; thus do We reward him who gives thanks.

(23) If We pleased, We would have made it salty; why do you not then give thanks?

(24) Say: He it is Who brought you into being and made for you the ears and the eyes and the hearts: little is it that you give thanks.

(25) We only feed you for Allah's sake; we desire from you neither reward nor thanks: