In addition to his published works Brandon Sanderson has also written several novels and short stories that have never been published commercially. Many of these works have been used as stepping stones to his later stories as he reworks and combines the various plot and world building elements.
While these works are unpublished some of these do exist in other forms and may be located. Others may be slated for completion or publication soon.
- Mistborn series
- Sequel to Warbreaker 
- Alcatraz finale
- Fifth and final book in Alcatraz series
- Dragonsteel (3 or 5 books)
- (only after Stormlight Archive is done)
- Dragonsteel The Lightweaver of Rens
- [Citation needed]
- White Sand trilogy
- totally beachin
- Elantris sequel
- Skin Deep
- Legion sequel
- The Aztlanian (The Rithmatist sequel, and maybe a finale)
- The Reckoners 2-3
- Steelheart novellas 2, 3:
- The King's Necromancer
- The Liar of Partinel 1, 2
- Hoid origin story
- The Silence Divine
- On planet in Roshar system, with ill people getting powers.
- Death By Pizza
- book with necromancer pizza deliveryman
- Mulholland Homebrew's Sinister Shop of Secret Pets
- a girl accidentally apprentices in a fantasy pet shop.
- Zeek Harbringer, Destroyer of Worlds
- Middle grade scifi, maybe an Alcatraz follow up, unwritten
- YA cosmere
These are works that are unlikely to ever be published either because elements have been co-opted for use in other books (as with Mythwalker and Aether of Night) or because the book has been re-written from scratch (as with White Sand Prime and The Way of Kings Prime).
- White Sand Prime
- Brandon's first novel, later re-written as White Sand.
- Star's End
- Brandon's second novel, a short alien-relations/sci-fi story.
- Lord Mastrell
- Brandon's third novel, a sequel to White Sand Prime.
- Knight Life
- Brandon's fourth novel, a fantasy comedy.
- The Sixth Incarnation of Pandora
- Brandon's fifth novel, a far future scifi involving immortal warriors
- Brandon's ninth novel, A book that included the characters Vivenna and Siri 
- Aether of Night
- Brandon's tenth novel, various elements have been cannibalized for other works (such as Decay becoming Ruin).
- Mistborn Prime
- Brandon's eleventh novel, elements were later combined with Final Empire Prime for Mistborn: The Final Empire.
- Final Empire Prime
- Brandon's twelfth novel, elements were later combined with Mistborn Prime for Mistborn: The Final Empire.
- The Way of Kings Prime
- Brandon's thirteenth novel, later re-written as The Way of Kings.
- Dark One
- non-cosmere YA
- Release announcement from Tor
- There will be more Wax and Wayne books
- Two More Mistborn Novels
- Another Long and Rambling Post™ on Future Books
- State of the Sanderson
- When will we see the next Alcatraz?
- Peter's comments
- Is Dragonsteel a trilogy or what?
- PCC 13 spotlight panel, transcript
- Firefight draft, Legion sequel Brandon's Twitter feed 2014-02-04
- Brandon's progress bars
- Steelheart Press Release BooktradeSuvudu The Bookseller
- Another Long-Winded Explanation of Various Things
- YA humor other than Alatraz?
- Bibliography posted in 2008 on TWG
- Annotation for Elantris Chapter 22