Global Road Entertainment

there are Disney sequels cancelled because Disney did not produce or release them.

Calcelelled by Disneytoon in 2006

 * Dumbo II
 * Hercules II - The Trojan War
 * The Nightmare Before Christmas 2
 * The Jungle Book 3
 * Pooh's Backson Movie (cancelled, but revived as Winnie the Pooh)
 * Aladdin 4
 * Fantasia 2006
 * Mulan III
 * The Aristocats II
 * Chicken Little: The Ugly Duckling Story
 * Meet the Robinsons: First Date
 * The Seven Dwarfs
 * Pinocchio II
 * Cinderella IV
 * Tinker Bell 7

Mostly Cancelled

 * Atlantis II: Shards of Chaos (renamed as Atlantis: Milo's Return)
 * Treasure Planet II (canceled when Treasure Planet disappointed at the box office)

Cancelled by Disney but revived by Pixar

 * Toy Story 3 (Recalled by Disney but then released in 2010)
 * Monsters, Inc. 2: Lost in Scaradise (released as Monsters University)
 * Finding Nemo 2 (Finding Dory)

Cancelled in the 2010s

 * Tangled II
 * Brave II
 * Inside Out 2
 * A Bug's Life 2
 * Ratatouille 2
 * Up 2
 * Zootopia 2
 * The Princess and the Frog II
 * Winnie the Pooh II
 * 5th Lilo & Stitch film
 * WALL-E 2
 * Finding Marlin