Chaim Potok (February 17, 1929 – July 23, 2002), was an American author, novelist, playwright, editor and rabbi. Among the more than a dozen books he authored, his first novel The Chosen (1967) was listed on The New York Times Best Seller list for 39 weeks and sold more than 3.4 million copies, and was adapted into a well-received 1981 feature film by the same title.

Herman Harold Potok was born in the Bronx, New York City, to Benjamin Max Potok (died 1958) and Mollie (née Friedman; died 1985), Jewish immigrants from Poland. He was the oldest of four children, all of whom either became or married rabbis. His Hebrew name was Chaim Tzvi (חיים צבי). He received an Orthodox Jewish education. After reading Evelyn Waugh's novel Brideshead Revisited (1945) as a teenager, Potok decided to become a writer (he often said that Brideshead Revisited was what inspired his work and writing). He started writing fiction at the age of 16. At age 17, he made his first submission to the magazine The Atlantic Monthly. Although it was not published, he received a note from the editor complimenting his work. He attended high school at Marsha Stern Talmudical Academy, Yeshiva University's boys high school.

In 1949, at the age of twenty, Potok's stories were published in the literary magazine of Yeshiva University, which he also helped edit. In 1950, he graduated summa cum laude with a BA in English Literature.

After four years of study at the Jewish Theological Seminary of America, Potok was ordained as a Conservative rabbi. He was appointed director of the Leaders Training Fellowship (LTF), a youth organization affiliated with Conservative Judaism.

After receiving a master's degree in English literature, Potok enlisted with the U.S. Army as a chaplain. He served in South Korea from 1955 to 1957. He described his time in South Korea as a transformative experience.^{[page needed]} Brought up to believe that the Jewish people were central to history and God's plans, he experienced a region where there were almost no Jews and no antisemitism, yet whose religious believers prayed with the same fervor that he saw in Orthodox synagogues at home.

Upon his return to the U.S., he joined the faculty of the University of Judaism in Los Angeles. Potok met Adena Sara Mosevitzsky, a psychiatric social worker, at Camp Ramah in Ojai, California, where he served as camp director from 1957 to 1959. They were married on June 8, 1958. In 1959, he began his graduate studies at the University of Pennsylvania and was appointed scholar-in-residence at Har Zion Temple in Philadelphia. In 1963, the Potoks were instructors at Camp Ramah in Nyack. Also in 1963, he began a year in Israel, where he wrote his doctoral dissertation on Solomon Maimon and began to write a novel.

In 1964, the Potoks moved to Brooklyn, where Chaim became the managing editor of the magazine Conservative Judaism and joined the faculty of the Teachers' Institute of the Jewish Theological Seminary. The following year, he was appointed editor-in-chief of the Jewish Publication Society in Philadelphia and later, chairman of the publication committee. During this time, Potok received a doctorate in philosophy from the University of Pennsylvania. In 1970, the Potoks relocated to Jerusalem and then returned to Philadelphia in 1977.

Potok was a member of the Writers and Artists for Peace in the Middle East, a pro-Israel group.