Characters are sorted by last name. A question mark denotes that the name (first or last) is unknown. This list was created with help from Griffindan5.

Characters

A-C     D-G    H-K   L-O   P-S   T-Z

Those names that can be found in the Harry Potter series are in white text.
Those names that can be found in Quidditch Through the Ages are in green text.
Those names that can be found in Fantastic Beasts & Where to Find Them are in red text.
Those names that can be found on the Official J.K. Rowling Website are in blue text.

Character	Description
Davies, Roger	Ravenclaw Quidditch Captain, went to the Yule Ball with Fleur Delacour.
Dawlish	An auror for the Ministry of Magic.
Dearborn, Caradoc	Vanished working for the Order of the Phoenix and his body was never found.
Delacour, Fleur	The Beauxbatons school champion.
Delacour, Gabrielle	Fleur's little eight year-old sister whom Harry rescued from the depth's of the lake during hte second task.
Delaney-Podmore, Sir Patrick	The leader of the headless hunt in which Nearly Headless Nick could not participate in.
Dennis	He is in Dudley's little gang of big, stupid, bullies.
Derwent, Dilys	A St. Mungos Healer and former headmaster of Hogwarts.
Diggle, Dedalus	McGonagall suspects that he set off fireworks the day Voldemort fell. He also meets Harry at the Leaky Cauldron.
Dimitrov, ?	Bulgarian National Quidditch Player
Dippet, Armando	One of Hogwarts' previous headmasters.
Diggory, Amos	Cedric's father who is the head of the Department of Magical Transportation in the ministry.
Diggory, Cedric	One of the Hogwart's school champions who was killed by Lord Voldemort. He was a Hufflepuff house student and captain and seeker of the Hufflepuff quidditch team.
Dobbs, Emma	A Hogwarts student.
Dobby	Former house-elf of the Malfoy's. Now works at Hogwarts.
Doge, Elphias	A wheezy-voiced wizard who is part of the Order of the Phoenix and Harry's advance guard.
Dolohov, Antonin	Death Eater that tortured countless muggles and non-Death Eaters.
Domy/Dorry/ Dorny/Donry	A Hogwarts student.
Dobby	The Malfoy's old house elf who now works at Hogwarts.
Dumbledore, Aberforth	Albus Dumbledore's brother who was prosecuted for practicing inappropriate charms on a goat and was a former member of the order of the phoenix.
Dumbledore, Albus	He is the headmaster at Hogwarts and one of the most respected wizards in the world.
Dunstar, B.	A Hogwarts student.
Dursley, Dudley	Harry's fat cousin who is a mean, spoiled, bully.
Dursley, Marge	Vernon Dursley's sister.
Dursley, Petunia	Harry's long necked aunt who spends much of her time spying on the perfectly normal neighbors.
Dursley, Vernon	Harry's big beefy, mean, uncle with hardly any neck who owns a drill company named Grunning's.
Edgecome, ?	Marietta Edgecombe's mother who works in the Department of Magical Transportation in the Ministry of Magic.
Edgecome, Marietta	Cho Chang's sneak friend who betrayed the DA
Egg, Mordicus	Author of The Philosophy of the Mundane: Why the Muggles Prefer Not to Know.
Elladora	Sirius' aunt that started the family tradition of beheading house-elves when they got too old to carry tea trays.
Emeric the Evil	Was mixed up with Uric the Oddball in History of Magic.
Errol	The Weasley family owl.
Evans, Mark	A victim of Dudley's gang.
Everard	A former Hogwarts headmaster.
Fat Friar	The Hufflepuff house resident ghost.
Fawcett, G.	A Hogwarts student.
Fawkes	Dumbledore's phoenix.
Fenwick, Benjy	Died while working for the Order of the Phoenix and only bits of him were found.
Figg, Arabella Doreen	A squib that lives near the Durleys.
Filch, Argus	The Hogwarts caretaker who is a squib and is constantly raging a war againt the students.
Finch-Fletchley, Justin	A Hufflepuff boy that was one of the students to be petrified by the Basilisk in Chamber of Secrets. A casual friend of Harry's.
Finnigan, Seamus	One of Harry's fellow Gryffindor friends.
Firenze	A centaur who rescues Harry from Voldemort. Current divination teacher at Hogwarts.
Fletcher, Mundungus	He tried to put a hex on Arthur Weasley when he had his back turns. Dumbledore also mentions him as one of the "old crowd".
Flitwick, Filius	Charms teacher and head of Ravenclaw house.
Fluffy	Hagrid's giant, three-headed dog.
Fridwulfa	Hagrid's giantess mother.
Goldstein, Anthony	A Ravenclaw student and member of the DA.
Golgomath	A giant and new gurg of the group of giants.
Goshawk, Miranda	Author of "The Standard book of Spells, Grade 2"
Goyle, Gregory	Friend of Draco Malfoy.
Granger, Hermione	A very clever Gryffindor. One of Harry's best friends and always the voice of reason for Ron and Harry.
Grawp	A giant and Hagrid's younger half-brother.
Gregory the Swarmy	There is a statue of him at Hogwarts.
Grenouille	Character in "Helas, Je me suis Transfigure Les Pieds."
Griffiths, Glynnis	Holyhead Harpie's seeker.
Grimstone, Elias	Created the Oakshaft 79 broomstick.
Griphook	A Gringotts goblin.
Grubbly-Plank, Wilhelmina	Substitute teacher for Care of Magical Creatures.
Grunnion, Alberic	On a chocolate frog card.
Gryffindor, Godric	One of the four founders of Hogwarts.
Gudgeon, Gladys	Writes to Gilderoy Lockhart weekly.
Gunhilda	Mentioned in Goodwin Keens's letter
Gunther the Violent	There is a painting of him playing Stichsock.