NOTE:This may only be the cast if the original script is used.
- TBA as Amy, the main protagonist.
- Tyler Mane (assumed) as Michael Myers, the main antagonist.
- Scout Taylor Compton as Laurie Strode, the secondary antagonist.
- Brad Dourif as Sheriff Lee Brackett
- TBA as Josey Blair, a doctor.
- TBA as Cooper Goodman, an assault officer.
- TBA as Kit, described as "emo hot".
- TBA as Red, Amy's boyfriend.
- TBA as Scott, Kit's boyfriend.
- TBA as Libby
- TBA as Hobbs
- TBA as Kat
- TBA as Gina
- TBA as Rabbit
- Malcolm McDowell as Dr. Loomis (cameo)
The Weinstein Company put Halloween 3D into production shortly after the release of Rob Zombie’s Halloween II. Rob Zombie already had stated he would not return for a third film, and The Weinstein Company approached Steve Miner about directing the film in response to his work on the 1982 film Friday the 13th Part III, also in 3D. The Weinstein Company approached Patrick Lussier (who directed the remake of My Bloody Valentine, also a 3D film), who was officially signed on as director with his partner Todd Farmer writing the script. Lussier and Farmer contacted Scout Taylor-Compton about the production of the film and how they would be filming soon despite not even having a script yet, to which Compton declined because she felt they were rushing it and that she would only return if she was impressed by the script.
On September 25, 2009, Todd Farmer turned in the first draft of the script. Four days later on September 29, 2009, production was shut down because the Weinsteins ran out of money. Filming was supposed to begin around the time Lussier and Farmer were filming Drive Angry. The production hault would give the Weinsteins a chance to take their time on production and give Lussier and Farmer time to wrap up Drive Angry, with production on Halloween 3D resuming after the completion of Drive Angry.
On April 6, 2010, Lussier revealed in an MTV interview that the fate of the film depends on Dimension Films and timing.
On June 21, 2011, it was confirmed that Halloween 3D was targeting a release on October 26, 2012, however, with no director or writer attached to the project. On March 7, 2012, the film was dropped from the release schedule as no progress on its production was made. Lussier said, "The script that we wrote I thought was good. We wanted to go back to Carpenter's roots on the original film."
On May 2, 2014, it was confirmed that Halloween 3 is moving forward, as stated: "As we stated before, we are dedicated to the fans of the Halloween series just as much as we are dedicated to delivering a film that we believe the fans deserve and will, most importantly, love. With that being said, we can confirm that a new installment of Halloween is indeed in on track and moving forward. We are currently developing a script, to finally bring Michael back to the theaters"