| Abbott, Hanna | Hufflepuff; friend of Macmillan |
| Aragog | spider in Forbidden Forest |
| Azkaban | wizard prison |
| Baron, Bloody | poltergeist; can control Peeves; Slytherin ghost |
| Basilisk | snake |
| Bell, Katie | Griffindor chaser |
| Binns | Professor; history of magic; ghost |
| Bletchy | Slytherin keeper |
| Borgen | runs Borgen & Burkes Dark Arts Shp in Knockturn Ally |
| Brockhurst, Mandy | Ravenclaw |
| Clearwater, Penelope | Ravenclaw prefect; girlfriend of Percy W. |
| Crabbe | Malfoy friend |
| Creevey, Colin | hangs on HP |
| Crockford, Doris | met at Leaky Cauldron |
| de Mimsy-Poppington | Sir Nicholas (Nearly Headless Nick); resident ghost of Griffindor |
| Delaney-Podmore | Sir Patrick; keeps Nearly Headless out of Headless Hunt |
| Diagon Alley | Wizard shops in London |
| Dippet, Armando | headmaster of Hogwarts when Riddle, Dumbledore were students |
| Dobby | house-elf of Malfoy; warns HP not to return to Hogwarts |
| Dumbledore, Albus | Headmaster at Hogwarts |
| Dursley, Dudley | son |
| Dursley, Petunia | Privet Drive; sister of Mrs. Potter |
| Dursley, Vernon | Works at Grunnings |
| Errol | Weasley owl |
| Fat Friar | Hufflepuff ghost |
| Fat Lady, The | gatekeeper to Griffindor tower |
| Fawkes | Dumbledore bird |
| Figg, Mrs. | Sometimes takes care of Harry when Dursleys can not |
| Filch, Argus | Hogwarts caretaker; has cat Mr. Norris |
| Finch-Fletchley, Justin | Hufflepuff |
| Fletcher, Mundungus | Ministry of Magic |
| Flitwick | Professor charms |
| Flourish & Blotts | bookstore in Diagon Alley |
| Fudge, Cornelius | Ministry of Magic, Head |
| Goyle | Malfoy friend |
| Granger, Hermione | HP Friend |
| Griffindor, Godric | from whom Hogwarts house is named |
| Gringotts | wizard's bank run by goblins |
| Hagrid, Rubeus | Keeper of the Keys and Grounds at Hogwarts |
| Hedwig | HP Owl |
| Hermes | Pecy Weasley owl |
| Hooch, Madam | re quidditch |
| Hopkins, Mafalda | Improper Use of Magic at MoM |
| Hornby, Olive | teased Myrtle |
| Hufflepuff, Helga | from whom Hogwarts house is named |
| Johnson, Angelina | Griffindor quidditch chaser; chaser |
| Leaky Cauldron | inn in Diagon Alley; Tom innkeeper |
| Lockhart, Gilderoy | Professor; Defense Against Dark Arts |
| Macmillan, Ernie | Hufflepuff |
| Malfoy, Draco | HP nemesis |
| Malfoy, Lucius | Draco Father |
| Mason, Mr. | Dursleys invite to home |
| Mason, Mrs. | Dursleys invite to home |
| McGonagall, Minerva | Deputy Headmistress, Professor of transfiguration at Hosgwarts; head of Griffindor |
| Moaning Myrtle | haunts girl's toilet on first floor |
| MoM | Ministry of Magic |
| Morag | wife of Aragog |
| Mortlake | MoM; Committee on Experimental Charms |
| O.W.L. | Ordinary Wizarding Level; grading measure |
| parselmouth | can speak to snakes (also parseltongue) |
| Patil, Parvati | twin of Patil |
| Patil | twin of Parvati |
| Peeves | school polergeist |
| Pince, Madam | librarian |
| Pomfrey, Madame | Medical |
| Potter, Harry | HP |
| Potter, James | HP Father |
| Potter, Lily | HP Mother; Sister of Mrs. Dursley |
| Ravenclaw, Rowena | from whom Hogwarts house is named |
| Riddle, Tom | Attended Hogwarts when Dumbledore did; wrote diary that talks back to you |
| Ronan | centaur; chestnut body; reddish tail |
| Slytherin, Salazar | from whom Hogwarts house is named |
| Smethley, Veronica | sent Lockhart fan letter |
| Snape, Severus | Professor of potions |
| Spinnet, Alicia | Griffindor quidditch player; chaser |
| Sprout | Professor; herbology |
| Squib | born from wizards but without wizard power |
| Thomas, Dean | black; Griffindor |
| Voldemort | evil wizard |
| Wailing Widow | from Kent |
| Warbeck, Celestina | singer |
| Weasley, Arthur | Father of Ron, etc; Misuse of Muggle Artefacts in MoM; tall, balding |
| Weasley, Bill | Oldest; in Africa working for Gringotts (bank) |
| Weasley, Charlie | 2nd oldest; in Romania studying dragons |
| Weasley, Fred | twin of George |
| Weasley, George | twin of Fred |
| Weasley, Ginny | 1 year behind HP at Hogwarts |
| Weasley, Molly | Mother; little, plump |
| Weasley, Percy | Prefect; girlfriend Penelope Clearwater/3/Head Boy |
| Weasley, Ron | HP friend |
| Wood, Oliver | 2 years ahead of HP |
