|First appearance||Angels & Demons|
|Created by||Dan Brown|
|Portrayed by||Tom Hanks
Robert Clotworthy (video game)
|Occupation||Professor of Religious Iconology and Symbology|
|Relatives||Howard Langdon (great-grandfather)|
Professor Robert Langdon is a fictional Harvard University professor of religious iconology and symbology (a fictional field related to the study of historic symbols, which is not methodologically connected to the actual discipline of Semiotics). The character was created by author Dan Brown for the novels and later movies Angels & Demons (2000), The Da Vinci Code (2003), and the novels The Lost Symbol (2009) and Inferno.
Tom Hanks portrayed Robert Langdon in the 2006 film adaptation of The Da Vinci Code, reprised the role in the 2009 film adaptation of Angels & Demons, and will play the role again in the film adaptation of The Lost Symbol.
Character development 
The character was created by Dan Brown as a fictional alter ego of himself or "the man he wishes he could be". Brown himself was born June 22, 1964 in Exeter, New Hampshire, and the fictional Langdon is described as having been born on June 22, also in Exeter, and attending the same school as Brown did, Phillips Exeter Academy. Initially we learn that Langdon is a successful scholar who Brown named after John Langdon, a professor of typography at Drexel University who is known for his creation of ambigrams, typographical designs that can be read in multiple ways; for example, both right side up and upside down. An example of Langdon's ambigrams appeared on the cover of the first edition of Brown’s novel Angels & Demons, and other ambigrams featured throughout that novel were also designed by Langdon. On the acknowledgments page, Brown calls Langdon "one of the most ingenious and gifted artists alive … who rose brilliantly to my impossible challenge and created the ambigrams for this novel". John Langdon also created the logo for the fictional Depository Bank of Zurich, which appears in The Da Vinci Code film.
Robert Langdon, born in Exeter, New Hampshire, United States, is described as looking like "Harrison Ford in Harris tweed", with his standard attire being a turtleneck, Harris Tweed jacket, khakis, and collegiate cordovan loafers, which he wears to all instances, from lectures to social events. A frequently referred to accessory is his Mickey Mouse watch, a gift from his parents on his ninth birthday. He drives an automatic Saab 900S.
Langdon was a diver at Phillips Exeter Academy in prep school and played water polo at Princeton University where he went for college. He suffers from claustrophobia, as he fell into a well when he was 7 years old. His father died when he was 12, and his new mentor father-figure became Peter Solomon, Secretary of the Smithsonian Institution.
Known for a brilliant problem-solving mind and his genius, Langdon has an eidetic memory. As professor at Harvard University, he teaches religious iconology and the fictional field of symbology. As a hobby it is specifically mentioned that Langdon is a great swimmer and swam laps (50) daily, a "morning ritual," at Harvard's athletic facilities (hence the lap swimming scene in the Angels and Demons movie). Langdon also mentions he was raised a Catholic but that he will never understand God; in A&D he mentions to Camerlengo that faith is a gift he has yet to receive.
In the books, the events of TDC follow those of A&D; this was reversed in the movies, where A&D is portrayed as a sequel to the previous movie.
Angels & Demons 
Robert Langdon is called to CERN headquarters in Switzerland to find about the religious symbological implications of the death of CERN's finest and best-known physicist, Leonardo Vetra, a Catholic priest who as been branded with the Illuminati symbol. When he starts to investigate the murder, his obsession for the subject history comes into play. Langdon is later joined in the investigation by Vittoria Vetra (Leonardo's daughter) and they start their journey to the Vatican to unlock the mystery behind the Illuminati, an anti-Catholic secret society which, according to the plot, has deeply infiltrated many global institutions, political, economical and religious. Langdon and Vetra solve the mystery of the Illuminati by following the Path of Illumination and in so doing explain the disappearances of four Cardinals during a papal conclave, the murder of Leonardo Vetra, and the theft of antimatter (a substance that can be used for mass destruction). At the end of the novel Langdon ends up having a relationship with Vittoria Vetra. In the last few sentences of Angels & Demons, Vittoria Vetra asks him if he has ever had a divine experience. When he replies in the negative, Vittoria strips and quips, "You've never been to bed with a yoga master, have you?" Their relationship, however, is only mentioned briefly in The Da Vinci Code, mentioning the fact that Langdon had last seen Vittoria a year previously.
The Da Vinci Code 
In the beginning of 2003's The Da Vinci Code, Robert Langdon is in Paris to give a lecture on his work. Having made an appointment to meet with Jacques Saunière, the curator of the Louvre, he is startled to find the French police at his hotel room door. They inform him that Saunière has been murdered and they would like his immediate assistance at the Louvre to help them solve the crime. Unknown to Langdon, he is in fact the prime suspect in the murder and has been summoned to the scene of the crime so that the police may extract a confession from him. While he is in the Louvre, he meets Sophie Neveu, a young cryptologist from the DCPJ. When Langdon and Sophie get the chance to talk in private, he finds out that Jacques Saunière is her grandfather. Saunière instructs Sophie to 'find Robert Langdon', according to the message he left for her in the floor. Hence, Sophie believes he is innocent of her grandfather's murder.
He spends the rest of the novel dodging the police and trying to solve the mystery of a secret ancient society, the Priory of Sion, which was once headed by Leonardo da Vinci. At the end of the novel, Langdon uncovers the mystery behind Mary Magdalene and the Holy Grail also called Sangreal, derived from either the Spanish "San Greal" (the Holy Grail), or the French "Sang royal "(royal blood). He also seems to fall in love with Sophie Neveu at the end of the book, his "love of bachelorhood (having been) severely shook up".
The Lost Symbol 
In The Lost Symbol, Robert Langdon has an adventure in Washington D.C. with the concepts of Freemasonry. Tricked into visiting the nation's Capitol, Robert Langdon spends twelve hours racing through the monuments and buildings of the USA's forefathers, searching for the truth about the secret society of the Masons. Behind new doors lie secrets that promise to change the way people view science and politics, now threatened by Zachary Solomon, the renegade, estranged son of Robert Langdon's friend, Peter Solomon, who has himself been kidnapped by Zachary, now going by the name Mal'akh. Robert Langdon is the last line of defense. With help from Katherine Solomon (Peter's younger sister), Warren Bellamy (the Architect of the Capitol) and Inoue Sato (the director of the CIA), Langdon solves a long-lost mystery hidden by the Masons and saves Peter Solomon after Zachary is killed by the CIA.
It is revealed that Langdon has had his Mickey Mouse watch for four decades. Making him 49 years old during the events of Inferno.
In The Da Vinci Code and The Lost Symbol, Langdon is said to have written six books:
- The Symbology of Secret Sects
- The Art of the Illuminati: Part 1
- The Lost Language of Ideograms
- Religious Iconology
- Symbols of the Lost Sacred Feminine
At that same point in the trilogy, Langdon is preparing the manuscript for his fifth book, to be titled Symbols of the Lost Sacred Feminine. It is later revealed in The Lost Symbol that Symbols of the Lost Sacred Feminine was published and created 'quite a scandal'.
- Associated Press (January 15, 2013). "New Dan Brown novel 'Inferno' coming in May". Yahoo!. Retrieved 2013-01-15.
- Naughton, Philippe (March 13, 2006). Dan Brown sprinkles statement with clues about next book. Times Online. Retrieved 2008-03-01
- "Robert Langdon Biography (Fictional Adventurer) —". Infoplease.com. Retrieved 2013-01-10.
- TLS, p. 8
- TLS, p. 25
- A&D, p. 26
- DVC, p. 227
- TLS, p. 7
- TLS, p. 15
- Ian Freer (May 2009). "Critical Mass". Empire. pp. 69–73.
- Brown, Dan (2000). Angels & Demons. New York: Simon and Schuster. p. 5. ISBN 978-0-7434-1239-1.
- Brown, Dan (2000). Angels & Demons. New York: Simon and Schuster. pp. 191–92. ISBN 978-0-7432-7771-6.
- The official Robert Langdon website
- Robert Langdon described in-depth by Dan Brown in his 21 Dec 2005 Witness Statement to London's High Court