List of Harry Potter Characters "D"

• Hector Dagworth-Granger – Founder of the Most Extraordinary Society of Potioneers
• Roger Davies – Ravenclaw student two years above Harry, Quidditch Chaser and Captain, attended the Yule Ball with Fleur Delacour
• John Dawlish – Auror
• Sir Nicholas de Mimsy-Porpington/Nearly Headless Nick – Gryffindor House ghost
• Caradoc Dearborn – Member of the original Order of the Phoenix
• Apolline Delacour – Wife of M Delacour (first name unknown), mother of Fleur and Gabrielle Delacour
• Fleur Delacour – Daughter of Apolline and M. Delacour (first name unknown), sister of Gabrielle Delacour, wife of Bill Weasley, mother of Victoire, Dominique and Louis Weasley, participated in the Triwizard Tournament representing Beauxbatons
• Gabrielle Delacour – Daughter of Apolline and M. Delacour (first name unknown), sister of Fleur Delacour
• Monsieur Delacour (first name unknown) – Husband of Apolline Delacour, father of Fleur and Gabrielle Delacour
• Sir Patrick Delaney-Podmore – Bearded ghost who leads the Headless Hunt
• Derrick – Beater for the Slytherin Quidditch team, three years above Harry
• Dilys Derwent – St Mungo's Healer and Headmistress of Hogwarts
• Barnabas Deverill – One-time owner of the Elder Wand, killed by Loxias
• Philbert Deverill – Manager of Puddlemere United
• Dedalus Diggle – Member of the Order of the Phoenix
• Amos Diggory – Works for the Department for the Regulation and Control of Magical Creatures, father of Cedric Diggory
• Cedric Diggory – Hufflepuff student two years above Harry, school prefect, Quidditch Seeker and captain, co-winner of the Triwizard Tournament. Killed by Peter Pettigrew on Voldemort's orders. 

List of Harry Potter Characters "C'

• Sir Cadogan – Armoured knight occupying a painting in Hogwarts
• Cadwallader – Hufflepuff Quidditch Chaser during Harry's time at Hogwarts
• S. Capper – Hogwarts student during Harry's time at school
• Eddie Carmichael – Ravenclaw student one year above Harry Potter
• Alecto Carrow – Sister of Amycus Carrow, Death Eater and professor of Muggle Studies for one year
• Amycus Carrow – Brother of Alecto Carrow, Death Eater and professor of Defence Against the Dark Arts for one year
• Greta Catchlove – Author of Charm Your Own Cheese
• Mary Cattermole – Wife of Reginald Cattermole, Muggle-born that Harry saves
• Ellie Cattermole – Daughter of Reg and Mary Cattermole
• Maisie Cattermole – Daughter of Reg and Mary Cattermole
• Alfred Cattermole – Son of Reg and Mary Cattermole
• Reginald Cattermole – Employee of the Magical Maintenance Department for the Ministry of Magic
• Owen Cauldwell – Hufflepuff student who entered Hogwarts during Harry's fourth year
• Chambers – Ravenclaw Quidditch Chaser during Harry's time at Hogwarts
• Cho Chang – Ravenclaw student one year above Harry, Quidditch Seeker, member of Dumbledore's Army.
• Glenda Chittock – Presenter of Witching Hour on the Wizarding Wireless Network, J. K. Rowling's Wizard of the Month for October 2004
• Herbert Chorley – Muggle Junior Minister who received a botched Imperius Curse that left him impersonating a duck and attacking innocent civilians 

List of Harry Potter characters "B"

• Bathsheda Babbling – Ancient Runes teacher at Hogwarts
• Malcolm Baddock – Slytherin student who is at Hogwarts during Harry's fourth year
• Mr Bagman – Father of Ludovic and Otto Bagman, friend of Death Eater Augustus Rookwood
• Ludovic Bagman – Quidditch Beater for the Wimbourne Wasps and Head of the Department of Games and Sports within the Ministry of Magic
• Otto Bagman – Brother of Ludovic Bagman
• Millicent Bagnold (Not to be confused with Millicent Bulstrode) – Minister for Magic before Cornelius Fudge
• Bathilda Bagshot – Author of A History of Magic, great aunt of Gellert Grindelwald. She is portrayed by Hazel Douglas in Harry Potter and the Deathly Hallows: Part 1.
• Heathcote Barbary – Guitarist for the Weird Sisters
• Musidora Barkwith – Composer noted for her work, Wizarding Suite
• Baruffio – Namesake of 'Baruffio's Brain Elixir'
• Ali Bashir – Flying carpet merchant who attempts to establish a flying carpet business in Britain in Goblet of Fire
• Basil – An employee of the Ministry of Magic who organizes Portkeys for wizards and witches
• Hetty Bayliss – Muggle who witnesses Arthur Weasley's flying Ford Anglia
• Oswald Beamish – Goblin rights pioneer
• Herbert Beery – Past Herbology teacher at Hogwarts who left to teach at the Wizarding Academy of Dramatic Arts
• Flavius Belby – First wizard to write about the lethifold