Below are the characters from J. K. Rowling's Wizarding World characters who have an appearance, mention, or otherwise tropable presence in Harry Potter and the Order of the Phoenix (the novel and its movie adaptation). Any tropes applicable to them will be written up on the pages below.
Characters in Harry Potter and the Order of the Phoenix (novel and movie):
- The Trio: Ron Bilius Weasley, Hermione Jean Granger
- Hogwarts Students: Dumbledore's Army
- Gryffindor: Neville Longbottom, Dean Thomas, Seamus Finnigan, Parvati Patil
- Slytherin: Draco Malfoy, Vincent Crabbe and Gregory Goyle, Pansy Parkinson
- Ravenclaw: Luna Lovegood, Padma Patil, Cho Chang, Michael Corner
- Hufflepuff: Zacharias Smith
- Hogwarts Staff: Minerva McGonagall, Filius Flitwick, Rubeus Hagrid, Sybill Trelawney, Remus Lupin, Wilhelmina Grubbly-Plank, Argus Filch, the Sorting Hat
- The Weasley Family: Molly Weasley, Arthur Weasley, Percy Weasley, Fred and George Weasley, Ginny Weasley
- Ministry of Magic: Dolores Umbridge, Cornelius Fudge, John Dawlish, Amelia Bones
- Order of the Phoenix Members: Alastor Moody, Aberforth Dumbledore, Arabella Figg, Elphias Doge, Emmeline Vance, Kingsley Shacklebolt, Nymphadora Tonks, Lily Potter, Frank and Alice Longbottom, Edgar Bones, Gideon and Fabian Prewett
- Marauders: James Potter, Sirius Black, Peter Pettigrew
- Death Eaters: Bellatrix Lestrange, Lucius Malfoy, Antonin Dolohov, Walden Macnair, Augustus Rookwood
- Muggles: Vernon Dursley, Petunia Dursley, Dudley Dursley
- Magical Beings: Dementors, Kreacher, Grawp
- Animals and Pets: Hedwig, Mrs. Norris, Fang, Crookshanks, Nagini, Fawkes, Thestrals
Novel only characters:
- Hogwarts Students
- Gryffindor: Lee Jordan, Colin Creevey, Lavender Brown, Angelina Johnson, Katie Bell, Alicia Spinnet
- Slytherin: Theodore Nott, Millicent Bulstrode
- Ravenclaw: Roger Davies, Marietta Edgecombe, Terry Boot, Anthony Goldstein
- Hufflepuff: Ernie Macmillan, Hannah Abbott, Susan Bones, Justin Finch-Fletchley
- Hogwarts Staff: Pomona Sprout, Gilderoy Lockhart, Rolanda Hooch, Firenze, Cuthbert Binns, Septima Vector, Aurora Sinistra, Poppy Pomfrey, Irma Pince, Trolley Witch
- The Weasley Family: Bill Weasley
- Order of the Phoenix Members: Mundungus Fletcher, Dedalus Diggle, Sturgis Podmore, Hestia Jones
- Death Eaters: Rodolphus Lestrange, Rabastan Lestrange, Nott, the Averys, the Mulcibers, Crabbe and Goyle Sr., Other Death Eaters
- Muggles: Mr. and Mrs. Granger
- Magical Beings: Nearly Headless Nick, Peeves the Poltergeist, Dobby, the Hogwarts House-elves
- Animals and Pets: Pigwidgeon, Buckbeak
- Other characters: Augusta Longbottom, Rita Skeeter, Stan Shunpike, the House of Black
Movie only characters:
- Hogwarts Students
- Gryffindor: Nigel Wolpert
- Death Eaters: Travers
