Jonathan Karp

Jonathan Karp (born April 2, 1964) is an American book editor, publisher, and writer. He was the publisher, president, and chief executive of Simon & Schuster where he led the company's flagship division. Karp also founded Twelve, an imprint at the Hachette Book Group, and was the editor-in-chief of Random House.

Early life and education Karp was born to a Jewish family and raised in the Short Hills section of Millburn, New Jersey. His mother worked as a schoolteacher and his father served as chairman and chief executive officer at a bank. Karp graduated from Brown University in 1986, where he majored in American civilization and served as president and editor of the student publication, The Brown Daily Herald. He wrote his master's thesis on Herman Wouk's novels.

Career Karp wrote for The Washington Post in the mid-1980s, then worked as a reporter for The Providence Journal and the Miami Herald. In July 2000, he was promoted to the role of publisher of '@Random', the company's e-book branch, and eventually worked his way up to editor-in-chief of Random House. He worked for Random House for sixteen years, with one interruption; in 2000, he left the publisher to head producer Scott Rudin's office in New York (Scott Rudin Productions) as vice president of development.

Karp then served as publisher and editor-in-chief of Twelve, an imprint he established within the Hachette Book Group in 2005, which publishes one book per month. Fifteen of Twelve's first thirty books appeared on The New York Times Best Seller list.

In mid 2010, Karp left Hachette to become Simon & Schuster's publisher, and was subsequently named president of the flagship division. On 29 May 2020, he became the CEO of Simon & Schuster. Karp was included in Publishers Weekly 2022 list of 25 "book business change makers", or "seriously consequential individuals whose mark on the industry is indelible". In his role as chief executive, Karp testified in a 2022 antitrust trial filed by the Department of Justice to prevent Penguin Random House from acquiring Simon & Schuster.

In 2022, Simon & Schuster sold 900 autographed copies of Bob Dylan’s book of essays, “The Philosophy of Modern Song.” Accompanying each $600 book was a letter of authenticity signed by Karp, the publisher's chief executive, indicating that the books had been hand signed by Dylan. According to a New York Times article, when the books arrived, readers immediately noticed that the autographs appeared to have been machine generated by an auto pen. While Simon & Schuster initially denounced the “online rumors,” intense pressure led the publishing house to send out an “acknowledgment” that the autograph had been rendered “in a penned replica form.” Buyers were then provided a refund. Karp and Simon & Schuster declined further comment. Dylan later said "his decision to digitally sign" the books was an "error in judgment", according to the Los Angeles Times.

Karp is the longtime editor of John McCain; the two collaborated with Mark Salter on Faith of My Fathers (1999), Worth the Fighting For (2002), Why Courage Matters (2004), and The Restless Wave (2018).

In 2020, Alexandra Alter of The New York Times wrote, "As a publisher who has worked with both conservative and liberal public figures, Mr. Karp has developed a reputation for knowing which political books will work commercially and how to market them." In 2021, he turned down a petition signed by approximately 200 staff members, opposing Simon & Schuster's decision to publish a memoir by Mike Pence. According to The Wall Street Journal, some staff said the deal "would be a betrayal of the company's promises to oppose bigotry and make minority employees feel safe", but Karp insisted Simon & Schuster is "committed to publishing a broad range of views".

In August 2025, Karp stepped down from his role as CEO and launched the imprint, Simon Six.

Theatre and television Karp met composer Seth Weinstein during their two-year apprenticeship at the BMI Lehman Engel Musical Theatre Workshop, in Manhattan in 1996. The duo wrote The Kugelmass Affair, which is based on a short story by Woody Allen.

Karp and Weinstein's second musical, Heart Throb, premiered at the Producers Club in 2001.

In May 2011, Karp made a cameo appearance on the finale of Gossip Girl fourth season ("The Wrong Goodbye"), in which he negotiates a manuscript deal with one of the show's main characters. He later appeared on the season five episodes "The Jewel of Denial" (October 10, 2011) and "Father and the Bride" (January 23, 2012).