
Among the Truthers: A Journey Through America's Growing Conspiracist Underground is a 2011 book by Canadian journalist Jonathan Kay that examines the popularity of conspiracy theories in the United States. The book examines the history and psychology of conspiracy theories, particularly focusing on the 9/11 Truth movement. It received generally positive reviews, though some reviewers raised issues about the book's focus and political claims.

Area 51: An Uncensored History of America's Top Secret Military Base is a book by American journalist Annie Jacobsen about the secret United States military base Area 51.

Bilingual Today, French Tomorrow: Trudeau's Master Plan and How it Can be Stopped was a controversial 1977 book by Jock V. Andrew, a retired Canadian naval officer. It alleged that the prime minister Pierre Trudeau's policy of official bilingualism was a plot to make Canada a unilingually francophone country, by instituting reverse discrimination against Anglophone Canadians.

Conspiracy Encyclopedia: The Encyclopedia of Conspiracy Theories is a non-fiction reference book about conspiracy theories, with an introduction by editor Thom Burnett. It was published in 2005 by Chamberlain Bros., and in 2006 by Collins & Brown. Contributors to the work include Thom Burnett, Nigel Cawthorne, Richard Emerson, Mick Farren, Alex Games, John Gill, Sandy Gort, Rod Green, Emma Hooley, Esther Selsdon, and Kenn Thomas.The encyclopedia discusses 365 conspiracy theories, most of which are political.

A Culture of Conspiracy: Apocalyptic Visions in Contemporary America is a 2003 non-fiction book written by Michael Barkun, professor emeritus of political science at the Maxwell School of Citizenship and Public Affairs.

Day of Deceit: The Truth About FDR and Pearl Harbor is a book by Robert Stinnett. It alleges that Franklin Roosevelt and his administration deliberately provoked and allowed the Japanese attack on Pearl Harbor to bring the United States into World War II. Stinnett argues that the attacking fleet was detected by radio and intelligence intercepts, but the information was deliberately withheld from Admiral Husband E. Kimmel, the commander of the Pacific Fleet at that time.

The Dead Sea Scrolls Deception is a book by authors Michael Baigent and Richard Leigh. Rejecting the established scholarly consensus that the Dead Sea scrolls were the work of a marginal Jewish apocalyptic movement, and following primarily the thesis of Robert Eisenman, the authors argue that the scrolls were the work of Jewish zealots who had much in common with, and may have been identical to, the early followers of Jesus led by his brother James the Just. Their unconventional hypothesis provides a different version of the history of early Christianity and challenges the divinity of Jesus.

Did Six Million Really Die? The Truth at Last is a Holocaust denial pamphlet allegedly written by British National Front (NF) member Richard Verrall under the pseudonym Richard E. Harwood and published in 1974 by neo-Nazi propagandist Ernst Zündel, another Holocaust denier and pamphleteer. The NF denied that Verrall was the author in a 1978 edition of World in Action.

Flight MH370: The Mystery is a 2014 book by the American-born-British author Nigel Cawthorne concerning the disappearance of Malaysia Airlines Flight 370.

History Decoded: The 10 Greatest Conspiracies of All Time is a 2013 non-fiction book by Brad Meltzer. It contains a series of investigations into history’s greatest conspiracies. Contained in at the introduction to each chapter is an envelope that holds facsimiles of relevant evidence: John Wilkes Booth's alleged unsigned will, a map of the Vatican, John F. Kennedy's death certificate. It is a companion to the show Brad Meltzer's Decoded on History Channel. According to WorldCat, the book is in 896 libraries.

The Holy Blood and the Holy Grail is a book by Michael Baigent, Richard Leigh and Henry Lincoln.

Jack the Ripper: The Final Solution is a book written by Stephen Knight first published in 1976. It proposed a solution to five murders in Victorian London that were blamed on an unidentified serial killer known as "Jack the Ripper".

The Lincoln Conspiracy is a book by David W. Balsiger and Charles E. Sellier, Jr. promoting certain conspiracy theories concerning the 1865 assassination of U.S. President Abraham Lincoln.

Mind Siege: The Battle for Truth in the New Millennium is a book written by David Noebel and Timothy LaHaye Making the case of what they view secular humanism to be. It was published in 2000.

A Moral Reckoning: The Role of the Catholic Church in the Holocaust and Its Unfulfilled Duty of Repair is a 2003 book by the political scientist Daniel Jonah Goldhagen, previously the author of Hitler's Willing Executioners (1996). Goldhagen examines the Roman Catholic Church's role in the Holocaust and offers a review of scholarship in English addressing what he argues is antisemitism throughout the history of the Church, which he claims contributed substantially to the persecution of the Jews during World War II.

The Morning of the Magicians : introduction to fantastic realism is a 1960 book by the journalists Louis Pauwels and Jacques Bergier. As the authors disclaim in their preface, the book is intended to challenge the reader's viewpoints on historic events, whether you believe their explanations or not, but with the goal to give a reader the opportunity to test their level of cognitive dissonance. The book is often referenced by conspiracy-theory enthusiasts, it presents a collection of "raw material for speculation of the most outlandish order", covering topics like cryptohistory, ufology, occultism in Nazism, alchemy and spiritual philosophy. Written in French, Le Matin des magiciens was translated into English by Rollo Myers in 1963 under the title The Dawn of Magic, and in 1964 released in the United States as The Morning of the Magicians. A German edition was published 1962 with the title Aufbruch ins dritte Jahrtausend.

The Murder of Princess Diana is a bestselling 2004 book by British journalist Noel Botham. Botham's book disputes the official account that the Death of Diana, Princess of Wales was an accident.

Natural Cures "They" Don't Want You To Know About is a 2005 self-published book by American author Kevin Trudeau, promoting a variety of non-drug and non-surgical purported cures for many diseases, primarily in support of his business selling such products. Trudeau accuses pharmaceutical companies and the United States government of censoring these products and methods on the basis that it would cut into their profit-margin. The book is the subject of widespread allegations of fraud.

The New Hate: A History of Fear and Loathing on the Populist Right is a 2012 political science and public affairs non-fiction book by the writer and editor Arthur S. Goldwag, published by Pantheon Books. The book discusses the history of conspiracy theories among right-wing populists in the United States, in particular what Goldwag considers personalized economic conspiracy theories driven by fear and hate within the radical right and the contemporary Tea Party movement.

The New World Order is a New York Times best-selling book authored by Pat Robertson, published in 1991 by Word Publishing. In the book, Robertson purports to expose a behind-the-scenes Establishment with enormous power controlling American policy, whose "principal goal is the establishment of a one-world government where the control of money is in the hands of one or more privately owned but government-chartered central banks." This conspiracy includes such elements as the Illuminati, the New Age movement, the Freemasons, the Council on Foreign Relations, and the Trilateral Commission. Robertson further claims that the rise of this one-world conspiracy is being guided by Satan to fulfill the predictions of premillennial Christian eschatology, viewing it as a sign that the end times are nearing.

Other Losses is a 1989 book by Canadian writer James Bacque, which makes the claim that U.S. General Dwight D. Eisenhower intentionally caused the deaths by starvation or exposure of around a million German prisoners of war held in Western internment camps after the Second World War. Other Losses charges that hundreds of thousands of German prisoners that had fled the Eastern front were designated as "Disarmed Enemy Forces" in order to avoid recognition under the Geneva Convention (1929), for the purpose of carrying out their deaths through disease or slow starvation. Other Losses cites documents in the U.S. National Archives and interviews with people who stated they witnessed the events. The book claims that a "method of genocide" was present in the banning of Red Cross inspectors, the returning of food aid, soldier ration policy, and policy regarding shelter building.
The Passover Plot is a 1965 book by British biblical scholar Hugh J. Schonfield, who also published a translation of the New Testament from a Jewish perspective. The book was adapted into a film, The Passover Plot (1976).

The Prime Minister Was a Spy is a 1983 book by British writer Anthony Grey. The book's premise is that Harold Holt, Prime Minister of Australia from 1966 to 1967, was a lifelong spy for the Chinese government, under both the Nationalist and Communist regimes.

"Raising Kane" is a 1971 book-length essay by American film critic Pauline Kael, in which she revived controversy over the authorship of the screenplay for the 1941 film Citizen Kane. Kael celebrated screenwriter Herman J. Mankiewicz, first-credited co-author of the screenplay, and denigrated the contributions of Orson Welles, who co-wrote, produced and directed the film, and performed the lead role. The 50,000-word essay was written for The Citizen Kane Book (1971), as an extended introduction to the shooting script by Mankiewicz and Welles. It first appeared in February 1971 in two consecutive issues of The New Yorker magazine. In the ensuing controversy Welles was defended by colleagues, critics, biographers and scholars, but his reputation was damaged by its charges. The essay were later questioned after Welles's contributions to the screenplay were documented.

Secret Places, Hidden Sanctuaries: Uncovering Mysterious Sites, Symbols, and Societies is a 2009 book called a "robust and skeptical look at the kind of esoteric nonsense celebrated in The Da Vinci Code."

The Strange Death of David Kelly is a 2007 book by British politician Norman Baker.

The Strange Death of Vincent Foster: An Investigation is a 1997 book by the journalist Christopher Ruddy. Ruddy first wrote about the Foster story while reporting for The New York Post and the Pittsburgh Tribune-Review, owned by the millionaire Richard Scaife. The book is about a conspiracy theory tying Bill and Hillary Clinton to the alleged murder of Vincent Foster. There were three separate official investigations of Foster's death, each concluding that he committed suicide. Ruddy believes Kenneth Starr's investigation was part of the conspiracy, calling Starr a "patsy for the Clintonites and those that believe that the stability and reputation of America is more important than justice." Even some of the more outspoken conservatives like Ann Coulter have dismissed Ruddy's conspiracy theories about Foster.

Them: Adventures with Extremists is a book by British journalist Jon Ronson published in 2001.

The Third Terrorist: The Middle East Connection to the Oklahoma City Bombing is a book by journalist Jayna Davis about evidence of an alleged conspiracy behind the 1995 Oklahoma City bombing. The Justice Department initially sought, but then abandoned its search for, a Middle East suspect. The book was published in April 2004 by Nelson Current Publishers, and became a New York Times best-seller. In contrast to conspiracy theories that the bombing was a false flag attack perpetrated by elements of the US government, the book presents a theory that links the Oklahoma City bombers to agents of Iraq and Al-Qaeda, operating under Iranian state sponsorship.

The Coming Race is a novel by Edward Bulwer-Lytton, published anonymously in 1871. It has also been published as Vril, the Power of the Coming Race.
Welcome to the N.H.K. is a Japanese novel written by Tatsuhiko Takimoto. It was published by Kadokawa Shoten in Japan in January 2002, and in English by Tokyopop in October 2007. The story revolves around a 22-year-old hikikomori, an asocial recluse, who gets aid from a strange girl who seems to know a lot about him, despite never having met him before. Common themes throughout the story deal with depression, anxiety, isolation, existential dread, the hardships of life and how people must deal with them in their own way. The novel analyzes profusely the hikikomori phenomenon, which is relatively widespread in Japan.