He was raised at the Çemberlitaş mansion of his paternal grandfather Kısakürekzade Mehmed Hilmi Efendi of Maraş; he was named after his great-grandfather Ahmed Necib, as well as his father, Fazıl.

"After completing candidate and combat classes" of Naval School, Kısakürek entered the Philosophy Department of Darülfünûn and graduated from there (1921–1924).

After returning home in 1926, he worked at Holland, Osmanlı and İş Banks (1926–1939), and gave lectures at the Faculty of Linguistics and History and Geography and the State Conservatoire in Ankara and the Academy of Fine Arts in İstanbul (1939–1942).

Having established a relation with the press in his youth, Kısakürek quit civil service to earn his living from writing and magazines.

[9] Appropriating his anti-semitic ideas from Europe, Kısakürek regarded Jews as the corrupting element within Western civilization, and described them as the originator of Marxism and capitalism.

[13] Many cadres of the Justice and Development Party (AKP) have been inspired by his rhetoric,[14] including Recep Tayyip Erdoğan,[5] who met Kısakürek while still a student and attended his funeral at the start of his political career.

[15] In his own words, having "learned to read and to write from his grandfather in very young ages", Kısakürek became "crazy about limitless, trivia reading" until the age of twelve starting from "groups of sentences belonging to lower class writers of the French" Having been involved in literature with such a reading passion, Necip Fazıl states that his "poetry started at the age of twelve" and that his mother said "how much I would like you to be a poet" by showing the "poetry notebook of a girl with tuberculosis" lying on the bed next to his mother's bed when he went to visit her staying at the hospital, and adds: "My mother's wish appeared to me as something that I fed inside but I was not aware of until twelve.

Ağaç, the writers of which included Ahmet Hamdi Tanpınar, Ahmet Kutsi Tecer and Mustafa Şekip Tunç, decided to follow a spiritualist and idealist line on the contrary to the materialist and Marxist ideas supported by the writers such as Burhan Belge, Vedat Nedim Tör, Şevket Süreyya Aydemir and İsmail Hüsrev Tökin of closed Kadro magazine owned by Yakup Kadri and which influenced the intellectuals of the time greatly.