Below are the characters from J. K. Rowling's Wizarding World who have an appearance, mention, or otherwise tropable presence in Harry Potter and the Chamber of Secrets (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 Chamber of Secrets (novel and movie):
- The Trio: Ron Bilius Weasley, Hermione Jean Granger
- Hogwarts Students:
- Gryffindor House: Neville Longbottom, Dean Thomas, Seamus Finnigan, Lee Jordan, Parvati Patil, Oliver Wood, Angelina Johnson, Katie Bell, Alicia Spinnet
- Slytherin House: Draco Malfoy, Vincent Crabbe and Gregory Goyle, Pansy Parkinson, Millicent Bulstrode, Marcus Flint
- Hufflepuff House: Ernest Macmillan, Hannah Abbott, Susan Bones, Justin Finch-Fletchley
- Hogwarts Staff: Minerva McGonagall, Rubeus Hagrid, Gilderoy Lockhart, Pomona Sprout, Filius Flitwick, the Sorting Hat, Argus Filch, Poppy Pomfrey, Irma Pince
- The Weasley Family: Molly Weasley, Arthur Weasley, Percy Ignatius Weasley, Fred and George Weasley, Ginny Weasley
- Ministry of Magic: Cornelius Oswald Fudge
- Marauders: Peter "Wormtail" Pettigrew
- Death Eaters: Lucius Malfoy
- Muggles: Vernon Dursley, Petunia Dursley, Dudley Dursley, Mr. and Mrs. Granger
- Magical Beings: Nearly Headless Nick, Moaning Myrtle, The Bloody Baron, The Fat Friar, Dobby
- Animals and Pets: Hedwig, Mrs. Norris, Fang, Errol, Fawkes, Aragog, Slytherin's Basilisk
Novel only characters:
- Hogwarts Staff: Quirinus Quirrell, Rolanda Hooch, Cuthbert Binns, Aurora Sinistra, Trolley witch
- Ministry of Magic: Mafalda Hopkirk
- Magical Beings: Peeves the Poltergeist
