Thor: The Dark World is an upcoming American superhero film featuring the Marvel Comics character Thor, produced by Marvel Studios and distributed by Walt Disney Studios Motion Pictures. It is intended to be the second Thor film following 2011's Thor and the eighth installment in the Marvel Cinematic Universe.

The film was directed by Alan Taylor, with a screenplay by Christopher Yost, Christopher Markus and Stephen McFeely, and features Chris Hemsworth, Natalie Portman, Tom Hiddleston, Stellan Skarsgård, Idris Elba, Kat Dennings, Ray Stevenson, Tadanobu Asano, Jaimie Alexander, Rene Russo and Anthony Hopkins reprising their roles from the first, with newcomers Christopher Eccleston, Adewale Akinnuoye-Agbaje, Zachary Levi and Clive Russell joining the cast.

Thor fights to restore order across the cosmos...but an ancient race led by the vengeful Malekith returns to plunge the universe back into darkness. Faced with an enemy that even Odin and Asgard cannot withstand, Thor must embark on his most perilous and personal journey yet, one that will reunite him with Jane Foster and force him to sacrifice everything to save us all.