Doors show up in some of the oldest riddles in the world, including the famous “When is a door not a door?” This collection covers every part of a door, famous doorways from history and a handful of classic logic puzzles.
Each riddle has a different answer, from doorknobs and peepholes to 10 Downing Street, the Roman god Janus and the two-guards puzzle.
Easy Door Riddles for Kids
- I open and close, I have a handle and I let you into a room. What am I? 👉 A door
- I am round, and you twist me to open a door. What am I? 👉 A doorknob
- I am a small piece of metal that turns inside a lock. What am I? 👉 A key
- I ding-dong when a visitor arrives. What am I? 👉 A doorbell
- I lie by the front door and often say “Welcome.” What am I? 👉 A doormat
- I am the metal joints that let a door swing open. What am I? 👉 Hinges
- I am a tiny hole in the door that lets you see who is outside. What am I? 👉 A peephole
- I go round and round at the entrance of big buildings. What am I? 👉 A revolving door
- I do not swing open. I glide sideways along a track. What am I? 👉 A sliding door
- I am a little flap in the door so the cat can come and go. What am I? 👉 A cat flap
- I am a secret door in the floor or ceiling. What am I? 👉 A trapdoor
- I am a door in a garden fence. What am I? 👉 A gate
- I am the strip at the bottom of a doorway that you step over. What am I? 👉 The threshold
- I am a wedge that keeps a door from swinging shut. What am I? 👉 A doorstop
- I am a small window above a door that lets in extra light. What am I? 👉 A transom
Door Fact Riddles
These riddles are based on real history and design. The note after each answer explains it.
- I am a famous black door in London, and the British prime minister lives behind me. What am I? 👉 10 Downing Street
- I am the ancient gate of Babylon covered in bright blue glazed bricks. What am I? 👉 The Ishtar Gate
- Automatic doors use me to know when someone is coming. What am I? 👉 A motion sensor
- Fire exit doors usually swing this way so people can get out quickly. Which way? 👉 Outward
- I am the Roman god of doorways and beginnings, and I have two faces. Who am I? 👉 Janus
- I am the month named after the Roman god of doorways. What am I? 👉 January
- I am the door on a ship or an airplane. What am I? 👉 A hatch
- I am a castle door that drops down over the moat. What am I? 👉 A drawbridge
- I am a door split into a top half and a bottom half, so you can open just the top. What am I? 👉 A Dutch door
Funny Door Riddles
- Why did the door go to school? 👉 To learn how to open up
Classic Door Brain Teasers
- When is a door not a door? 👉 When it is ajar
- Two doors lead out of a room. One leads to freedom, the other does not. One guard always lies and one always tells the truth. What single question do you ask? 👉 “Which door would the other guard say leads to freedom?” Then take the other door
- What has keys but cannot open a single door? 👉 A piano
- What runs all the way around a house but never moves? 👉 A fence
- A house has 3 floors with 4 doors on each floor. How many doors are there? 👉 12
- What goes through a door but never goes in or out? 👉 A keyhole
Want more riddles? Browse our blog for more collections, and if you spot a mistake in any answer, let us know on our Contact page.