Harry Potter Quiz: 20 Questions
From Hogwarts houses to Horcruxes, spells to Quidditch, this Harry Potter quiz covers the full wizarding world across all seven books and eight films. Ten questions run as an interactive challenge — then dive into the full 20-question trivia bank, expert explanations, and an HBO 2026 update. Think you can score 100%?
The Complete Guide to Harry Potter Trivia (2026)
J.K. Rowling's Harry Potter series — seven novels published between 1997 and 2007 — remains one of the best-selling book series in history, with over 500 million copies sold across 80+ languages. The wizarding world introduced readers to Hogwarts School of Witchcraft and Wizardry, four competing houses, hundreds of named spells, and a mythology stretching back a thousand years. In 2026, the franchise is bigger than ever: Max (formerly HBO Max) is producing a 10-season television adaptation that will closely follow the books, and the video game Hogwarts Legacy continues to attract new fans to the series.
Whether you're preparing for a pub quiz, challenging a friend, or simply wanting to test how well you remember the books vs. the films, this guide covers the knowledge areas that matter most. We've analysed the top trivia resources — BuzzFeed's 240-question bank, Reader's Digest's 115 questions, and the College Transitions hard-level book-by-book breakdown — and distilled the most testable facts into this comprehensive guide.
The Four Hogwarts Houses: Everything You Need to Know
The four Hogwarts houses are the most frequently tested topic in any Harry Potter quiz — and the details go far deeper than most fans realise. Here is the complete breakdown:
| House | Founder | Animal | Trait | Notable Alumni |
|---|---|---|---|---|
| Gryffindor | Godric Gryffindor | Lion | Bravery, nerve, chivalry | Harry, Hermione, Ron, Dumbledore, McGonagall |
| Slytherin | Salazar Slytherin | Serpent | Ambition, cunning, resourcefulness | Voldemort, Snape, Draco, Merlin (yes, Merlin) |
| Ravenclaw | Rowena Ravenclaw | Eagle | Intelligence, creativity, wit | Luna Lovegood, Cho Chang, Gilderoy Lockhart |
| Hufflepuff | Helga Hufflepuff | Badger | Loyalty, patience, hard work | Cedric Diggory, Nymphadora Tonks, Newt Scamander |
One detail that regularly trips people up: Hufflepuff's animal is an eagle — wait, no, Hufflepuff's is a badger, and Ravenclaw's is actually an eagle, not a raven as you might expect. The house colours are another common quiz pitfall: Gryffindor is scarlet and gold, Slytherin is green and silver, Ravenclaw is blue and bronze (in the books — the films changed this to blue and silver), and Hufflepuff is yellow and black.
Essential Harry Potter Spells for Trivia
The Harry Potter universe contains hundreds of named spells, but a core set appears in trivia questions repeatedly. The three Unforgivable Curses — Avada Kedavra (instant death), Crucio (pain/torture), and Imperio (mind control) — are banned by the Ministry of Magic and carry a life sentence in Azkaban.
Key spells every quiz contestant should know:
- Expelliarmus — disarms the opponent; Harry's signature move
- Lumos / Nox — lights up / extinguishes wand tip
- Alohomora — unlocks doors
- Wingardium Leviosa — levitates objects (Hermione: "It's Levi-O-sa, not Levio-SA")
- Accio — Summoning Charm, summons objects to the caster
- Riddikulus — defeats a Boggart by making it comical
- Avada Kedavra — Killing Curse; one of three Unforgivable Curses
- Sectumsempra — slashing curse invented by Snape, used by Harry on Draco
A common trick question: Harry's spell that defeats Voldemort in the final duel is not Avada Kedavra — it is Expelliarmus, his disarming spell. Voldemort's Killing Curse rebounds off Harry's Disarming Charm because Harry is the true master of the Elder Wand.
Horcruxes: The Complete List
Voldemort's Horcruxes are one of the most tested advanced topics. A Horcrux is an object in which a dark wizard conceals a fragment of their soul, achieved by committing murder and splitting the soul. Voldemort created six intentionally and one accidentally:
| Horcrux | Hidden In | Destroyed By | Method |
|---|---|---|---|
| Tom Riddle's Diary | Lucius Malfoy | Harry Potter | Basilisk fang |
| Marvolo Gaunt's Ring | Gaunt shack, Little Hangleton | Dumbledore | Sword of Gryffindor |
| Slytherin's Locket | R.A.B. / cave, later Umbridge | Ron Weasley | Sword of Gryffindor |
| Hufflepuff's Cup | Bellatrix's Gringotts vault | Hermione Granger | Basilisk fang |
| Ravenclaw's Diadem | Room of Requirement | Vincent Crabbe (fiendfyre) | Fiendfyre |
| Nagini (the snake) | Always near Voldemort | Neville Longbottom | Sword of Gryffindor |
| Harry Potter (unintended) | Harry's scar | Voldemort (Killing Curse in forest) | Avada Kedavra |
20 Harry Potter Trivia Questions: Full Answer Guide
Interactive quiz covers questions 1–10. Here are questions 11–20 with full explanations — great for studying or quiz prep.
Q11: What is the incantation for the spell that makes an object Unplottable?
A: The Fidelius Charm (combined with making a Secret-Keeper)
The Fidelius Charm conceals a secret within the soul of a Secret-Keeper. Even if you know where the location is, you cannot find it unless the Secret-Keeper tells you. The Potters used this to hide in Godric's Hollow — but Peter Pettigrew (not Sirius Black) was their Secret-Keeper and betrayed them to Voldemort.
Q12: Who founded Hogwarts School of Witchcraft and Wizardry?
A: Godric Gryffindor, Helga Hufflepuff, Rowena Ravenclaw, and Salazar Slytherin — together, approximately 1,000 years ago.
The four founders built Hogwarts together but eventually had a falling out, primarily due to Salazar Slytherin's belief that only pure-blood wizards should be allowed to study at Hogwarts. He left — but not before creating the Chamber of Secrets and hiding the Basilisk within it.
Q13: What is the name of the prison where dark wizards are sent in Harry Potter?
A: Azkaban
Azkaban is a fortress prison on an island in the North Sea, guarded by Dementors — soul-sucking creatures that feed on happiness. The mere proximity of a Dementor causes people to relive their worst memories. Sirius Black famously escaped Azkaban in Prisoner of Azkaban — the first person ever to do so.
Q14: What animal can Sirius Black transform into?
A: A large black dog
Sirius Black is an Animagus — a witch or wizard who has learned to transform at will into an animal. His animal form is a large black dog, which earned him the nickname "Padfoot" among the Marauders. The other Marauders were Moony (Remus Lupin — werewolf), Wormtail (Peter Pettigrew — rat), and Prongs (James Potter — stag).
Q15: What does the spell 'Avada Kedavra' do?
A: Kills the target instantly — it is the Killing Curse, one of three Unforgivable Curses
Avada Kedavra is derived from the Aramaic phrase "avada kedavra" meaning "let the thing be destroyed." It produces a flash of green light and cannot be blocked by any counter-curse — only by sacrificial love (as Lily Potter demonstrated). Harry survived it twice, first as an infant and then in the Forbidden Forest in Deathly Hallows.
Q16: What is the full name of the headmaster who preceded Dumbledore at Hogwarts?
A: Armando Dippet
Armando Dippet was Headmaster of Hogwarts during the 1940s when Tom Riddle was a student. He appears in Chamber of Secrets in the memory Dumbledore shows Harry via the diary — an elderly, frail wizard who was nearly fooled by Tom Riddle's framing of Hagrid for opening the Chamber of Secrets.
Q17: What is the core of Voldemort's wand?
A: A phoenix feather — from the same phoenix (Fawkes) whose other tail feather is in Harry's wand
Both Harry's and Voldemort's wands share a core feather from Dumbledore's phoenix, Fawkes. This is why the wands are "brothers" and why Priori Incantatem occurs when they duel — the Reverse Spell Effect. Ollivander considers this connection deeply significant, noting the wands chose their masters for a reason.
Q18: Who kills Albus Dumbledore, and where?
A: Severus Snape, on the Astronomy Tower at Hogwarts
Dumbledore's death at the end of Half-Blood Prince appears to be a betrayal — but is later revealed to be an act of mercy prearranged by Dumbledore himself. Draco Malfoy was tasked by Voldemort with killing Dumbledore but was unable to do it. Snape, acting on Dumbledore's own instructions, cast Avada Kedavra to spare Draco from becoming a murderer and to preserve Snape's cover as a spy.
Q19: What Quidditch team does Ron Weasley support?
A: The Chudley Cannons
Ron's devotion to the Chudley Cannons — a notoriously unsuccessful team (their motto is "Let's all just keep our fingers crossed and hope for the best") — is one of the running jokes of the series. Their robes are bright orange. Harry supports the Wimbourne Wasps, and the overall best team in England is generally considered to be the Holyhead Harpies, for whom Ginny Weasley later plays.
Q20: In what year was Hogwarts founded, according to "Hogwarts: A History"?
A: Approximately the 10th century (around 990 AD), roughly 1,000 years before the events of the books
Hogwarts: A History — Hermione's favourite book, which Ron and Harry famously never read — places the school's founding in the early medieval period. The exact year is never precisely stated in the books, but "roughly 1,000 years ago" is the consistent figure. The school's motto is "Draco dormiens nunquam titillandus" — Latin for "Never tickle a sleeping dragon."
Frequently Asked Questions About Harry Potter
What are the four Hogwarts houses?
The four Hogwarts houses are Gryffindor (bravery, lion), Hufflepuff (loyalty, badger), Ravenclaw (wisdom, eagle), and Slytherin (ambition, serpent). They were founded by Godric Gryffindor, Helga Hufflepuff, Rowena Ravenclaw, and Salazar Slytherin approximately 1,000 years ago.
Who wrote the Harry Potter series?
The Harry Potter series was written by J.K. Rowling (Joanne Rowling). The first book, Harry Potter and the Philosopher's Stone, was published on 26 June 1997 by Bloomsbury after being rejected by 12 publishers. The series has sold over 500 million copies in 80+ languages.
What is Voldemort's real name?
Voldemort's real name is Tom Marvolo Riddle. He is a half-blood wizard — his father Tom Riddle Sr. was a Muggle, his mother Merope Gaunt a witch. The anagram of "Tom Marvolo Riddle" is "I am Lord Voldemort," which he reveals dramatically in Chamber of Secrets.
How many Horcruxes did Voldemort create?
Voldemort intentionally created 6 Horcruxes: his diary, Marvolo Gaunt's ring, Slytherin's locket, Hufflepuff's cup, Ravenclaw's diadem, and his snake Nagini. Harry Potter became an unintended 7th Horcrux when Voldemort's Killing Curse rebounded in 1981, fragmenting his soul into Harry's scar.
What is the spell to disarm an opponent in Harry Potter?
Expelliarmus disarms an opponent, sending their wand flying. It is Harry's signature spell — he uses it to defeat Voldemort in the Battle of Hogwarts. Voldemort's Avada Kedavra rebounds off Harry's Expelliarmus because Harry is the true master of the Elder Wand.
What is Quidditch in Harry Potter?
Quidditch is the most popular sport in the wizarding world, played on broomsticks. Seven players per team: three Chasers (score goals), two Beaters (deflect Bludgers), one Keeper (guards goalposts), one Seeker (hunts the Golden Snitch). Catching the Snitch earns 150 points and ends the game. Harry plays Seeker for Gryffindor.
How many Harry Potter movies are there?
There are 8 main Harry Potter films, released from 2001 to 2011. Harry Potter and the Deathly Hallows was split into two parts. The Fantastic Beasts prequel series has added 3 films. An HBO television series closely following all 7 books is in production as of 2026, expected to run 10 seasons.
Which Hogwarts house was Hermione Granger sorted into?
Hermione Granger was sorted into Gryffindor. Despite her exceptional intelligence — which the Sorting Hat might have used to place her in Ravenclaw — she was sorted into Gryffindor for her bravery and courage. J.K. Rowling has said she herself would be in Gryffindor, though she initially thought Hufflepuff.
