A list of trivia related to Doctor Strange:
Reference to the Marvel Cinematic Universe
- Wong makes a comparison between the Masters of the Mystic Arts and the Avengers to Stephen Strange, specifying that they are battling more mystical threats from extra-dimensional beings.
- The Avengers Tower can be seen on the New York skyline, during the Battle of the Mirror Dimension.
- Near the end of the movie, Wong reveals that the Eye of Agamotto contains an Infinity Stone. This is the fifth Infinity Stone revealed in the Marvel Cinematic Universe.
Reference to the Marvel Comics
- Characters from the movie adapted from the movie in the main cast are Stephen Strange/Doctor Strange, the Ancient One, Karl Mordo, Kaecilius, Christine Palmer, Wong and Dormammu. Other characters from the comics are Nicodemus West, Daniel Drumm, Tina Minoru and Hamir.
- When he entered Kamar-Taj, Strange mistakes Master Hamir for the Ancient One, only to be greeted by the real one. This is a reference to the original Ancient One appearances in the comics.
- The look of the Dark Dimension is heavily inspired by Steve Ditko's design of Eternity's realm in the comics.
- Kamar-Taj's wi-fi password is "Shamballa", a reference to the mystical lost kingdom and, more specifically, to the 1986 graphic novel Doctor Strange: Into Shamballa.
- The surgery scene of Doctor Strange operated by Christine Palmer at the Metro-General Hospital, is nearly identical to the surgery scene of the Doctor Strange: The Oath, where Strange is operated by Linda Carter.
Deleted Scenes and Concepts
- Originally, Scott Derrickson intended to make Nightmare the main villain of the movie, but Kevin Feige was against it. “Kevin made a very cogent case,” said Derrickson. “The trouble with starting with Nightmare is getting across the idea of the Dream Dimension as another dimension. The movie was challenging enough. It's already an exposition-heavy movie... Dormammu made the most sense. And he is the most present villain in the comics.”
- The property master Barry Gibbs revealed that the Ebony Blade was meant to appear in the movie, alongside the other relics conserved in the Sanctum Sanctorum. "That was going to go into a book called the Lexicon of Relics, but the Ebony Blade was taken out of the script. I don't quite know why. Again, as things evolved, it wasn't pertinent to the script. Things just moved on." 
- In an early draft of the movie, Stephen Strange was meant to became the Sorcerer Supreme by the end of the movie, but Derrickson and his crew had many many problems with that.
- Colin Farrell, Jake Gyllenhaal, Tom Hardy, Ethan Hawke, Jack Huston, Oscar Isaac, Jared Leto, Matthew McConaughey, Ewan McGregor, Keanu Reeves and Benedict Cumberbatch were all considered for Stephen Strange.
- Benedict Cumberbatch was the first choice and was offered the lead role of Stephen Strange but initially had to decline due to his theatre commitments playing Shakespeare's Hamlet which will clash with the film's proposed shooting date. Joaquin Phoenix was the studio's second choice for lead role but Phoenix, after a few months of deliberation, eventually turned down the offer due his reluctance to do a multi-picture deal that was required by the studio if he signed on.
- The film has been in development since 1986. Wes Craven was set to direct in 1992. Later in 2001, David S. Goyer was going to write and direct. In 2008, Guillermo del Toro was brought on as director. In 2014, Mark Andrews, Jonathan Levine, Nikolaj Arcel, Scott Derrickson and Dean Israelite were on the shortlist to direct with Derrickson being the ultimate choice.
- This is the second film to feature Doctor Strange after a live-action TV movie featuring Peter Hooten in the lead role in 1978 that premiered on CBS, which was airing The Amazing Spider-Man and The Incredible Hulk TV series at the time.