A blazer was a jacket resembling a suit jacket, but cut more casually.[source needed]
Worn by the Doctor
The Third Doctor wore many blazers of velvet in olive green with oeaked lapels, (TV: Carnival of Monsters) plum purple with peaked lapels, (TV: Planet of the Daleks) petrol blue with scarlet piping on the notched lapel, (TV: The Green Death) aquamarine with a notched collar, (TV: Invasion of the Dinosaurs) emerald green with peaked lapels, (TV: The Monster of Peladon) charcoal grey with peaked lapels, (TV: Planet of the Spiders) and burgundy with a rolled collar. (TV: The Five Doctors) His charcoal blazer was worn up to his death. (TV: Planet of the Spiders)
The Fourth Doctor wore the Third Doctor's charcoal blazer in his first hours. (TV: Planet of the Spiders, Robot) He also wore an umber blazer with peaked lapels when he met Magnus Greel in London during 1892. (TV: The Talons of Weng-Chiang)
The Sixth Doctor wore a brown and crimson tweed blazer when undercover in Bletchley Park during 1944. (AUDIO: Criss-Cross), and when visiting Russia in 1947. (AUDIO: Quicksilver) He also wore a peach blazer with notched lapels on the Memory TARDIS. (TV: Vengeance on Varos)
The Seventh Doctor wore blazers of cream linen, (PROSE: White Darkness) or tan herringbone-tweed With a notched collar. (TV: Doctor Who)
The Tenth Doctor wore pinstripe blazers with notched collars done on dark brown and light blue, (TV: The Christmas Invasion-The End of Time) or navy and crimson. (TV: Smith and Jones-Dreamland) He often wore a black blazer as part of his tuxedo. (TV: Rise of the Cybermen|The Age of Steel, The Lazarus Experiment, Voyage of the Damned) He also wore a charcoal grey tweed blazer when posing as John Smith. (TV: Human Nature/The Family of Blood)
The Eleventh Doctor wore tweed blazers with notched collars. He wore one of light fawn Donegal tweed, (TV: The Eleventh Hour). He also wore a Harris tweed blazer, (TV: Victory of the Daleks) but lost it while escaping the Weeping Angels aboard the Byzantium (TV: Flesh and Stone) after which he resumed wearing his Donegal tweed jacket, (TV: The Vampires of Venice) though occasionally wore a replacement Harris tweed blazer. (GAME: City of the Daleks) Following Amy and Rory's honeymoon, he began wearing a Shetland tweed blazer. (TV: A Christmas Carol)
The Curator, a future version of the Doctor wore a blazer of olive green herringbone-tweed during the form of an older Fourth Doctor. (TV: The Day of the Doctor)
A parallel version of the Doctor wore a wine purple moleskin blazer when he and Bernice Summerfield fought Faction Cybermen on Nazi Germany. (AUDIO: Blood and Steel)
Worn by Companions
Sarah Jane Smith wore a chestnut brown blazer during her first adventures with the Third Doctor. (TV: The Time Warrior, Invasion of the Dinosaurs) She also wore a light brown tweed blazer when she met the Tenth Doctor, (TV: School Reunion) and also wore a navy velvet blazer similar to the Third Doctor's when she met the Mona Lisa. (TV: Mona Lisa's Revenge)
Amy Pond wore navy blazers with notched lapels over her t-shirts. (TV: Amy's Choice, The Lodger)
During her time as CEO of A Charitable Earth, Ace wore a black and white pinstripe suit. (AUDIO: Quantum of Axos; TV: The Power of the Doctor)
Clara Oswald wore a midnight blue dress under a navy blazer when meeting Professor Alec Palmer and his assistant Emma Grayling on Caliburn House during 1974, (TV: Hide). She also wore a plum purple blazer undercover. (TV: Time Heist)
Donna Noble wore a black blazer during the March of the Adipose. (TV: Partners in Crime) She also wore a Prussian blue blazer during the 2009 Sontaran invasion of Earth. (TV: The Sontaran Stratagem|The Poison Sky)
Martha Jones wore a black blazer when she and the Tenth Doctor met Billy Shipton during 1969. (TV: Blink) She also wore a black blazer when helping Torchwood Three. (TV: Reset)
Melanie Bush wore a mint green blazer when she joined the Third Doctor in the First Rani’s trap. (TV: Dimensions in Time)
Peri Brown wore a flaxen blazer with black stripes, (TV: The Mysterious Planet) and also a blazer in raven black. (TV: Dimensions in Time)
Yasmin Khan wore a sage green blazer when she went to Punjab during 1947, (TV: Demons of the Punjab) and a black one. (TV: Spyfall)
Brian, an Ood assassin, wore a black blazer as part of his tuxedo. (PROSE: The Guide to the Dark Times, The Knight, The Fool and The Dead)
Dan Lewis wore a navy blue blazer during the early 1900s. (TV: Survivors of the Flux, The Vanquishers)
Ryan Sinclair wore a navy blue pinstripe blazer during a trip to New York during 1903. (TV: Nikola Tesla's Night of Terror).
Ian Chesterton wore a black blazer during a meeting of companions. (TV: The Power of the Doctor)
Brigadier Alistair Gordon Lethbridge-Stewart wore a navy blue blazer when braving the Game of Rassilon set up by President Borusa in his quest for immortality. (TV: The Five Doctors) He also wore a blazer of houndstooth tweed when he helped the Bannerman Road Gang to foil Bane including Wormwood and Cal Kilburne as well as Commander Kaagh from the Sontaran Empire's Special Assault Squad and sole survivor of the Tenth Sontaran Battle Fleet; (TV: Enemy of the Bane) and when he helped the Ninth Doctor to fight Mondasian Cybermen. (AUDIO: Way of the Burryman, The Forth Generation)
Lieutenant Harry Sullivan, a doctor from UNIT, wore a double-breasted blazer with peaked lapels in Prussian blue when travelling with the Fourth Doctor. (TV: Robot, The Ark in Space, The Sontaran Experiment, Genesis of the Daleks, Revenge of the Cybermen, Terror of the Zygons)
Worn by the Master
The UNIT Master wore black blazers when posing as businessmen. (TV: Terror of the Autons-The Daemons)
The Tremas Master wore a wine velvet blazer during his dark sports with the Determinant, (GAME: Destiny of the Doctor) and during his alliance with Adam Mitchell. (COMIC: Cat and Mouse)
The Bald Master wore velvet blazers done on charcoal (AUDIO: Eyes of the Master) or gunmetal. (AUDIO: Dominion)
The War Master wore a single-breasted blazer of tweed done in charcoal grey, (AUDIO: The Heavenly Paradigm) or olive green. (AUDIO: The Sincerest Form of Flattery)
The Saxon Master wore black blazers when posing as Harold Saxon. (TV: The Sound of Drums/Last of the Time Lords)
The Spy Master wore a black blazer as part of his acting as O. (TV: Spyfall) He also wore a charcoal tweed blazer as part of his master plan. (TV: The Power of the Doctor)
Worn by Others
Henry van Statten wore a black blazer during the escape of the Metaltron Dalek. (TV: Dalek)
John Lumic wore an ebony pinstripe blazer with notched lapels up to becoming a Controller of the Cybus Cybermen. (TV: Rise of the Cybermen, The Age of Steel)
Tobias Vaughn wore a black blazer during the 1970's Cyberman invasion of Earth. (TV: The Invasion)
Cathica wore a black blazer as part of her suit. The Editor of Satellite Five wore a navy blue blazer with matching trousers. (TV: The Long Game)
Mr Copper wore a blazer of olive green tweed. (TV: Voyage of the Damned)
Professor Jeremiah P. Kettlewell wore a moss green blazer with notched lapels. (TV: Robot)
The President of Great Britain wore a black blazer up to his death. (TV: Rise of the Cybermen)
Professor Jericho wore a charcoal blazer under his ebony black overcoat during the early 1900s. (TV: Survivors of the Flux|The Vanquishers)
The Abzorbaloff wore a charcoal pinstripe blazer when posing as Victor Kennedy. (TV: Love & Monsters)
Robert Muir wore a tan blazer when he met the Fifth Doctor, Nyssa, Adric, and Tegan Jovanka on 1925. (TV: Black Orchid)
Harriet Jones wore a peach blazer during the London UFO crash and her encounter with Slitheen. (TV: Aliens of London|World War Three) She also wore a black blazer during the 2006 Sycorax Invasion of Earth. (TV: The Christmas Invasion)
Shirley Bingham wore a dark teal tweed blazer when she met the Fourteenth Doctor during the Meep's attempted Destruction of London in 2023. (TV: The Star Beast) She also wore a blazer of steel blue pinstripe when she witnessed the Toymaker's defeat and the Fifteenth Doctor's birth. (TV: The Giggle)
Gerald Peach wore a double-breasted blazer of dark brown tweed up to his death. (TV: The Unicorn and the Wasp)
Diagoras wore a double-breasted blazer of raven pinstripe as did Dalek Sec when he fused with him to become a Human Dalek during the Human Dalek Incident. (TV: Daleks in Manhattan/Evolution of the Daleks)
Grayle wore a double-breasted blazer of ebony pinstripe. (TV: The Angels Take Manhattan)
The Monk wore a blazer of indigo houndstooth tweed. (AUDIO: The Rise of the New Humans)
Janice wore a single-breasted blazer of tan corduroy. (GRAPHIC: Janice)
Kate Stewart wore a double-breasted blazer with peaked lapels in Prussian blue when she met the Toymaker, and when she witnessed the bi-generation of the Doctor's fourteenth and fifteenth incarnations. (TV: The Giggle)
Albert Dumfries, a senior member of the Cabinet of Harold Saxon, wore a black pinstripe blazer up to when he was killed by the Saxon Master before the Toclafane Invasion of Earth. (TV: The Sound of Drums)
Artie Berger, a piano musician, wore a charcoal grey blazer when helping to capture a sound monster on 1946. (AUDIO: Fright Motif)