List of ufologists

Argentina

• Fabio Zerpa,, parapsychologist and UFO researcher.
• Juan Posadas,, Trotskyist theorist who blended together Trotskyism and Ufology. Posadas' version of Trotskyism is regarded as its own strain, and called Posadism.

  Belgium

• Julien Weverbergh, co-author of several books on ufology, in co-operation with Romanian ufologist Ion Hobana. In these books, Julien Weverbergh is exploring the phenomenon of corporized light.

  Brazil

• Ademar José Gevaerd

  Canada

• Stanton Friedman,, U.S. born Canadian ufologist, former nuclear physicist, did early research on Roswell and also MJ-12 documents.
• Paul Hellyer,, Former Canadian Defense Minister.

  Estonia

• Igor Volke, ufologist and researcher of environmental anomalies

  France

• Jacques Bergier, writer, co-wrote the best-seller The Morning of the Magicians.
• Robert Charroux, writer, promoted the Ancient astronauts theory.
• Rémy Chauvin, biologist and entomologist.
• Aimé Michel, writer and ufologist.
• Jean-Pierre Petit, scientist, senior researcher at National Center for Scientific Research CNRS as an astrophysicist. Promoted the Ummo theory. Created the Ufo-Science Association.
• Jacques Vallée computer scientist and author, important figure in the UFO studies in France and in the United States. Promoted the extraterrestrial hypothesis and later the interdimensional hypothesis.

  Indonesia

• J. Salatun,, pioneer of UFO research in Indonesia.

  Italy

• Monsignor Corrado Balducci,, Roman Catholic theologian of the Vatican Curia long time exorcist for the Archdiocese of Rome.

  Mexico

• Jaime Maussan,, Mexican journalist and ufologist.

  Netherlands, The

• Bram Roza,, Founder of the Dutch National Reporting Center and researcher of Dutch close encounters.
• Coen Vermeeren,, Dutch aerospace engineer and writer and speaker on the UFO subject.

  Romania

• Ion Hobana
• Dan Apostol
• Doru Davidovici

  Spain

• Iker Jiménez Elizari, journalist born in the Basque city of Vitoria. He's licensed in Sciences of the Information by the Complutensian University of Madrid and the European University of Madrid. His wife, Carmen Porter, is also a journalist and investigator on paranormal activity; both work together in the show Cuarto Milenio, in the TV network Cuatro, and its radio version Milenio 3 in Cadena SER, about paranormal activity, Ufology and other mysteries.

  Sweden

• :sv:Clas Svahn|Clas Svahn

  Switzerland

• Erich von Däniken,, controversial Swiss author best known for his books which examine possible evidence for extraterrestrial influences on early human culture.
• Billy Meier,
• Giorgio A. Tsoukalos,, probably best known for his work on Ancient Aliens and Alien memes.

  United Kingdom

• Timothy Good, British researcher and author.
• George King, regarded himself as "Primary Terrestrial Mental Channel" for great and evolved extraterrestrial Intelligences.
• Elizabeth Klarer,, South African contactee and UFO photographer.
• Nick Pope, Former head of the UFO desk, Ministry of Defence; author of Operation Thunder Child.
• Jenny Randles,, British author and former director of investigations with the British UFO Research Association.
• Brinsley Le Poer Trench,, ufologist and a believer in flying saucers, and in particular, the Hollow Earth theory.
• Colin Wilson,, English philosopher and author of Alien Dawn.

  United States

• George Adamski, controversial UFO contactee and known hoaxer of the 1950s, wrote several bestselling books about his encounters with friendly "space brothers" from other planets.
• Walter Harrison Andrus, Jr., investigated UFO sightings from the early 1960s until his death. He was one of the founders of MUFON in Quincy, Illinois in 1969, and served as its president from 1970 to 2000.
• Orfeo Angelucci , one of the most unusual of the mid-1950s UFO contactees.
• Stephen G. Bassett, extraterrestrial life lobbyist, treasurer of the Extraterrestrial Phenomena Political Action Committee, and executive director of Paradigm Research Group
• Art Bell , U.S. radio broadcaster and author, known primarily as the founder and longtime host of the paranormal-themed radio program Coast to Coast AM.
• William J. Birnes, American writer, editor, book publisher and literary rights agent. He is best known as an active publisher of UFO literature and is a New York Times bestselling author.
• Jerome Clark, UFO historian, author of the UFO Encyclopedia
• Philip J. Corso, Army Military Intelligence officer, wrote highly disputed book on Roswell UFO incident.
• Robert Dean, ufologist, reportedly read a document called An Assessment, a NATO report on UFOs prompted by an incident on February 2, 1961 during which 50 UFOs allegedly appeared over Europe.
• Tom DeLonge, former singer and guitarist of blink-182 and founder of To the Stars Academy of Arts and Sciences
• Glenn Dennis, founder of the International UFO Museum and Research Center in Roswell, New Mexico, which opened in September 1991. Dennis is a self-professed witness to the Roswell UFO incident.
• Richard M. Dolan, author of UFOs and the National Security State, Vol. I: Chronology of a Cover-Up 1941–1973, and a frequent speaker at UFO conferences. Also, a co-host of the television series Sci-Fi Investigates.
• Danielle Egnew, American Psychic / Medium and Paranormal Radio, TV and Film host. Contactee who regularly reports on first-hand communication with extraterrestrial species along with detailed physics / design of extraterrestrial propulsion systems.
• Raymond E. Fowler, long-time UFO investigator, details one of the best multiple witness alien abduction cases on record, author of The Andreasson Affair and The Allagash Abductions.
• Daniel Fry, American contactee who claimed he had multiple contacts with an alien and took a ride in a remotely piloted alien spacecraft on July 4, 1949.
• Allen H. Greenfield, American occultist, Ufologist, writer, editor.
• Steven M. Greer, American physician known as a proponent of openness in government, media and corporations when it comes to advanced technologies that he and others believe to have been shelved and hidden from public awareness for reasons of profit and influence.
• Richard H. Hall, former assistant Director of NICAP in the 1960s, former director of the Fund for UFO Research in the 1980s.
• Charles I. Halt, retired USAF Colonel who was a key figure in the Rendlesham UFO incident in 1980.
• Allan Hendry, astronomer, full-time UFO investigator for the Center for UFO Studies in the late 1970s and early 1980s.
• Budd Hopkins, alien abduction researcher.
• Linda Moulton Howe, journalist known for investigating cattle mutilations.
• J. Allen Hynek, astronomer, consultant to Project Blue Book. Founded CUFOS.
• Morris K. Jessup, photographer, is probably best remembered for his pioneering ufological writings and his role in uncovering the so-called Philadelphia Experiment.
• John Keel , journalist, investigated the famous Mothman Sightings in West Virginia in 1966 and 1967.
• Donald Keyhoe, aviator and Marine Corps officer, was the leader of NICAP, the largest civilian UFO research group in the U.S., in the 1950s and 1960s.
• Philip J. Klass, senior editor of Aviation Week and Space Technology, leading UFO skeptic/debunker from mid-1960s until his death in 2005.
• George Knapp, American investigative journalist.
• Bob Lazar, owner of a mail-order scientific supply company who claims to have worked from 1988 until 1989 at an area called S-4.
• Bruce Maccabee, retired US Navy optical physicist, has analyzed numerous UFO videos and photos.
• Jim Marrs, conspiracy theorist, news reporter, college professor, and author of books and articles on a wide range of assorted conspiracy theories.
• Riley Martin, self-described alien contactee, author, and radio host.
• John E. Mack, Harvard psychiatrist/professor, alien abduction researcher.
• Donald Howard Menzel, professor of astronomy at Harvard University, leading UFO skeptic of the 1950s and 1960s.
• James W. Moseley, editor of Saucer Smear, long-time observer, author and commentator of the UFO phenomena.
• George Noory, broadcaster of the popular "Coast to Coast" radio broadcast; the program discusses paranormal events.
• Curtis Peebles, aerospace historian for the Smithsonian Institution, also a leading UFO skeptic.
• Kevin D. Randle, captain in the US Air Force Reserves; also a leading investigator of the Roswell UFO Incident in 1947.
• Nick Redfern, British ufologist/Cryptozoologist now living in Dallas, Texas, US.
• Edward J. Ruppelt, Air Force captain who supervised Project Blue Book, the Air Force's official study of the UFO phenomenon in the 1950s and 1960s.
• Harley Rutledge, solid-state physicist, Southeast Missouri State University.
• Robert Sheaffer, member of CSICOP's UFO subcommittee, a leading UFO skeptic/debunker.
• Whitley Strieber, author of Communion, UFO researcher, paranormal phenomena expert, and alleged abductee.
• Leonard H. Stringfield,, American ufologist who took particular interest in crashed flying saucer stories.
• Michael D. Swords, biophysicist at Western Michigan University, prominent ufologist for the Center for UFO Studies.
• Jacques Fabrice Vallée, scientist, author.