• Anime and manga about parallel universes (4 C, 45 P)
• Comics about parallel universes (10 C, 70 P)
• Films about parallel universes (8 C, 129 P)
• Novels about parallel universes (11 C, 72 P)
• Short stories about parallel universes (1 C, 9 P)
• Video games about parallel universes (15 C, 192 P)

C

• The Chronicles of Amber (2 C, 4 P)
• The Chronicles of Narnia (5 C, 8 P)
• Works set in computers (6 C, 6 P)

D

• The Dark Tower (series) (6 C, 6 P)
• Fictional dimensions (4 C, 37 P)

I

• Infinite Worlds (4 P)

L

• The Librarian (franchise) (8 P)

M

• Magic: The Gathering (8 C, 33 P)
• Michael Moorcock's Multiverse (2 C, 16 P, 1 F)

O

• Fiction about the afterlife (16 C, 37 P)
• Oz (franchise) (6 C, 25 P)

P

• Portal fantasy (8 C, 56 P)

T

• Television series about parallel universes (20 C, 91 P)

• Parallel universes in fiction

A

• Assiti Shards series

C

• The Counter-Clock Incident

D

• DC Elseworlds
• Dear Brutus
• Destination: Imagination
• Destiny Gang
• Dream Cycle

G

• Guildmasters' Guide to Ravnica
• GURPS Infinite Worlds

H

• Hoops & Yoyo Ruin Christmas

I

• Isekai

M

• Magic: The Gathering
• Married (radio series)
• MetaZoo
• Multiverse (Marvel Cinematic Universe)
• Multiverser
• Mythic Odysseys of Theros

O

• Outer Plane
• Outime

P

• Paratime series

R

• Regular Show season 8

S

• Strixhaven: A Curriculum of Chaos

T

• Teenage Mutant Ninja Turtles (1987 TV series) season 3
• Teenage Mutant Ninja Turtles (2012 TV series) season 4
• Teenage Mutant Ninja Turtles (2012 TV series) season 5
• Timemaster

U

• Undone (radio series)

W

• When Worlds Collide (role-playing game)