Bow tie
A bow tie or dickie bow (PROSE: A Big Hand for the Doctor) was a form of necktie in the shape of a bow. They could be either pre-tied or self-tied. The Doctor wore a bow tie in many of his incarnations.
The Doctor's bow ties
The First Doctor wore a navy blue ribbon bow tie; most notably during his first adventure with Barbara Wright and Ian Chesterton during the Stone Age, (TV: The Unearthly Child) his alliance with Thals to defeat Skaro City Daleks in his first Dalek encounter on Skaro, (TV: The Daleks) during his encounter with Marco Polo and Kublai Khan on 1289, (TV: Marco Polo) during his first encounter with Voord, (TV: The Keys of Marinus) during his time with Aztecs, (TV: The Aztecs) during his first encounter with Sensorites, (TV: The Sensorites) during the French Revolution, (TV: The Reign of Terror) when confronting the Inventor Master on Destination, (AUDIO: The Destination Wars) when confronting Takagi Mamoru and Casper Knox in Japan during the 1820s, (AUDIO: The Barbarians and the Samurai) during his first encounter with a Dalek Supreme, (AUDIO: Return to Skaro) during the First Omega Crisis, (TV: The Three Doctors) when preventing Mark Forester's mad plan with DN6 from endangering life, (TV: Planet of Giants) when helping the Rebels of London foil Dalek Earthforce's Project Degravitate and saying goodbye to Susan Foreman, (TV: The Dalek Invasion of Earth) and during his first game with the Toymaker. (TV: The Celestial Toymaker)
The Second Doctor's bow tie appeared along with his other clothes when his first incarnation regenerated with the TARDIS' assistance. As with the rest of his clothing, the Second Doctor's bow tie was untidy and crumpled; it was a small pre-tied dark tie with small spots, attached to his collar with a safety pin. (TV: The Power of the Daleks, et al.)
The Third Doctor wore a variety of bow ties towards the latter part of his life. He often wore bow ties done in raven black, (TV: The Three Doctors) bottle green, (TV: Planet of the Daleks) wine red, (TV: The Green Death) cyan, (TV: The Time Warrior) Prussian blue, (TV: Planet of the Spiders) or ivory. (COMIC: The Lost Dimension) His successor, the Fourth Doctor, wore the Prussian blue bow tie briefly. (TV: Planet of the Spiders, Robot)
The Sixth Doctor wore a navy blue bow tie with crimson polka dots with his 'Bletchy Tweeds'. (AUDIO: Criss-Cross, Quicksilver)
The Tenth Doctor usually wore a necktie, but on some occasions dressed up in formal wear, including a bow tie. (TV: Rise of the Cybermen|The Age of Steel, The Lazarus Experiment, Voyage of the Damned) He also wore one when posing as John Smith. (TV: Human Nature/The Family of Blood)
The Eleventh Doctor adopted a bow tie along with the other clothes he stole from Royal Leadworth Hospital soon after his regeneration. (TV: The Eleventh Hour) He was extremely fond of his bow tie and would often insist that "bow ties are cool" in spite of his companions' criticism. (TV: The Eleventh Hour, Vincent and the Doctor, The Lodger, A Christmas Carol, et al.) He wore bow ties in burgundy, (TV: The Eleventh Hour) navy, (TV: Victory of the Daleks) and blue. (TV: The Impossible Astronaut) He also included a white bow tie as part of his formal wear, seen during Amy and Rory's wedding (TV: The Pandorica Opens) and on the occasion of his death. (TV: Let's Kill Hitler) During his period of retirement after losing Amy Pond and Rory Williams, the Eleventh Doctor changed his outfit to something more befitting his sojourn in Victorian London, but put on a violet purple bow tie again when spurred back into adventure by Clara Oswin Oswald. (TV: The Snowmen) He varied the patterns of his violet bow ties to include wheat, (TV: The Bells of Saint John [+]) chevron squares, (TV: The Rings of Akhaten [+]) polka-dotts, (TV: Cold War [+]) flowers, (TV: Nightmare in Silver [+]) and thistles. (TV: The Day of the Doctor [+]) He wore both classic and clip-on bow ties and told Alice Obiefune that he wore clip-ons because someone had once tried to use his bow tie to throttle him. (TV: The Bells of Saint John, COMIC: The Friendly Place) Before his regeneration into the Twelfth Doctor, he removed it and let it drop to the floor as a sign of his upcoming change. (TV: The Time of the Doctor) The Twelfth Doctor dismissed bow ties as "embarrassing". (TV: Time Heist) However, upon seeing Adrian Davies, a teacher at Coal Hill School with a fashion sense reminiscent of his previous incarnation, complete with bow tie, he responded more favourably because he was under the mistaken impression that he was the boyfriend of his companion Clara Oswald, taking pride in that she was dating a man resembling him. (TV: The Caretaker)
He would later compliment Osgood on her "nice bow tie", which she took to wearing after meeting his predecessor, to which she quoted him "bow ties are cool". Osgood's bow tie would later be disintergrated along with herself by Missy. (TV: Death in Heaven) However, it later became unclear if the Osgood that got disintegrated was the actual Osgood or her Zygon double, (TV: The Day of the Doctor, The Zygon Invasion / The Zygon Inversion) which meant the bow tie could have been part of a camouflage and not actual clothing.
The Thirteenth Doctor wore a black bow tie with her tuxedo. (TV: Spyfall)
An early incarnation of the Doctor who wore a tricorn wore a bow tie. (TV: The Brain of Morbius)
The Curator, taking the form of an older Sixth Doctor, wore a turquoise bow tie. (AUDIO: Crossed Lines) When he met Tania Bell after she moved into 107 Baker Street, he took the form of an elderly Eleventh Doctor, who was "all bow ties and elbows. (AUDIO: The Keys of Baker Street)
Companions
Sarah Jane Smith wore an ebony black ribbon bow tie when braving the Game of Rassilon set up by President Borusa in his quest for immortality. (TV: The Five Doctors)
Ace wore an ivory bow tie as part of her tuxedo when she went to Gabriel Chase on 1883. (TV: Ghost Light)
Romana II wore a black ribbon bow tie when she met Great Vampires. (TV: State of Decay)
Ryan Sinclair and Graham O'Brien wore black bow ties with their tuxedos. (TV: Spyfall)
Brian, an Ood assassin, wore an ebony black bow tie as part of his tuxedo. (PROSE: The Guide to the Dark Times, The Knight, The Fool and The Dead)
The Master
The Master wore bow ties.
The Tremas Master wore a midnight blue bow tie when he met the Seventh Doctor, Ace, and the Cheetah People during his Survival Stratagem. (TV: Survival)
The War Master sometimes wore a burgundy bow tie. (AUDIO: The Sincerest Form of Flattery, A Quiet Night In, The Orphan, Unfinished Business)
The Spy Master wore a black bow tie when posing as O at Daniel Barton's party. (TV: Spyfall)
Others
The Toymaker wore an alabaster bow tie when he was mock dancing with the Fourteenth Doctor in London during 2023. He also wore a burgundy bow tie with ivory polka dots in Soho during 1925. (TV: The Giggle)
Winston Churchill who was prime minister for Britain during World War 2 wore an ebony bow tie; (TV: Victory of the Daleks) as did his parallel counterpart who was Holy Roman Emperor on River Song's World. (TV: The Wedding of River Song)
Sir Keith Gold, the Executive Director of the Inferno Project, was also seen to wear a bow tie. (TV: Inferno)
Gwendoline and Nimrod wore ivory bow ties with tuxedos. (TV: Ghost Light)
Charles Dickens wore an ivory bow tie when he met the Ninth Doctor, Rose Tyler, Gwyneth, and the Gelth in Cardiff during 1869. (TV: The Unquiet Dead)
Oscar Bothcerby wore a black bow tie up to his death when he was mortally wounded by the Androgum Shockeye with a knife. (TV: The Two Doctors)
Professor Jeremiah P. Kettlewell wore a wine purple bow tie. (TV: Robot)
Gerald Peach wore a bottle green bow tie up to his death. Christopher, a Vespiform posing as a human to study humans, wore an ivory bow tie as part of his tuxedo on Delhi during the Victorian era. (TV: The Unicorn and the Wasp)
Mr Copper wears a plum purple bow tie. Bannakaffalatta and Rickston Slade wore alabaster bow ties. (TV: Voyage of the Damned)
Dr Henry Black sported various bow ties while working for the Musée d'Orsay, much to the Eleventh Doctor's approval. (TV: Vincent and the Doctor)
After being visited in childhood by the Eleventh Doctor and assured that "bow ties are cool", Kazran Sardick wore a bow tie throughout his life. Kazran's father, Elliot Sardick, was also pictured wearing a bow tie. (TV: A Christmas Carol)
The Ringmaster of the Psychic Circus wore a gold bow tie. (TV: The Greatest Show in the Galaxy)
The Pied Piper wore a black bow tie when posing as Mr. Spellman, director of Spellman's Magical Museum of the Circus. (TV: The Day of the Clown)
The Tenth Doctor once derisively noted that bow tie were only worn by art critiques but upon further reflection, noted that it wasn't a terrible look. (COMIC: The Arts in Space)
The Monk wore a garish bow tie. (AUDIO: The Book of Kells)
The Dream Lord wore a crimson bow tie when he appeared in the Eleventh Doctor's console room. (TV: Amy's Choice)
Adrian Davies wore a bow tie, making him resemble the Eleventh Doctor, to the approval of the recently regenerated Twelfth Doctor. (TV: The Caretaker)