- Alex Rider Series: 14 books (including two graphic novels)
- The Diamond Brothers Series: 5 books
- The Power of Five Series: 5 books
- Stormbreaker Series: 3 books
- The Will Grant Detective Series: 3 books
- Hawthorne and Horowitz Mystery Series: 2 books
- Sherlock Holmes: The House of Silk Series: 2 books
- Foyles War Series: 2 books
- _The Killing Joke_ (co-written with Brian Bolland)
- _The Gatekeepers_ (co-written with Jane Deverson)
- _Just One Look_
- _Raven's Gate_
- _Stillwater_
- _The House of Silk_ (Sherlock Holmes)
- _Moriarty_ (Sherlock Holmes)
- _The Twist of a Knife_
- _Magpie Murders_
- _Moonflower Murders_
- _The Sentence is Death_
- _All on the Line_
- _Forever and a Day_
- _The Word is Murder_
- _A Line to Kill_
- _The Falcon's Malteser_
- _The South by South East Mystery_
- _The Falcon and the Snowman: A True Story of Friendship and Espionage_
- _In Search of Dracula_
- _James Bond, Villain_
Please note that this list may not include all of Anthony Horowitz's publications, and there may have been additional works published since May 2023.