Avengers: Doomsday Countdown

Doctor Doom arrives and three universes answer — the countdown the official teasers keep ticking.

Live countdown to the premiere

About Avengers: Doomsday

Avengers: Doomsday is the Marvel Cinematic Universe’s next ensemble event film, hitting US theaters on December 18, 2026. Fourteen months after the events of Thunderbolts*, the multiverse is collapsing — and teams from three different universes converge to face it: the Avengers, Wakandans and New Avengers of Earth-616, the Fantastic Four of Earth-828, and the X-Men of Earth-10005. Standing across all of them is Doctor Doom, played by Robert Downey Jr. in the role reversal of the franchise. The Russo brothers direct what they have described as a story about the complexities and vulnerabilities of Marvel’s most powerful villain. If that were not enough, the film lands between bookends: it sets up Avengers: Secret Wars, already dated for December 17, 2027.

From announcement to opening night

The road to December 18 has been a saga of its own. The film began life as Avengers: The Kang Dynasty, dated for May 2025. After the 2023 writers’ strike pushed scripts back, Disney re-dated it to May 1, 2026 — and then, once the rebooted story came together under the title Doomsday, moved it to its December 2026 slot with more production time.

Cameras rolled at Pinewood Studios in England from April to September 2025, with location work in England and Bahrain. The cast reveal became an event of its own: a chair-by-chair livestream in March 2025 that ran nearly five and a half hours and became the most-viewed cross-platform announcement stunt ever. Short teasers followed in theaters, the first full trailer premiered at CinemaCon in April 2026, and a Doom-focused special look screened at San Diego Comic-Con and D23 that August.

One signature runs through every trailer: a clock, counting down. The studio has made the countdown part of the movie’s identity — so this page simply runs the same clock for you, live, to the second, in your own timezone. In September 2026 a re-release of Avengers: Endgame even carried new footage that bridges directly into Doomsday’s story.

The confirmed cast so far

The ensemble spans all three universes — returning Avengers, the Fantastic Four, and the X-Men making their MCU debut. The announced lineup includes:

…and more, from Hayley Atwell’s Peggy Carter to Alan Cumming’s returning Nightcrawler. Marvel confirmed roles chair by chair in the March 2025 livestream, and further names are expected as release day approaches.

Release date history

The date has moved twice — worth knowing if you saw an older article. Studio schedules can shift again, so treat this page’s clock as the source of truth for the currently announced date:

Avengers: Doomsday facts

• Avengers: Doomsday opens in US theaters on Friday, December 18, 2026, two days after its UK date of December 16.
• It is the fifth Avengers film and part of Phase Six of the Marvel Cinematic Universe.
• Anthony and Joe Russo return to direct — their fourth Avengers movie after The Winter Soldier, Civil War, Infinity War and Endgame.
• Robert Downey Jr., the MCU's original Iron Man, comes back as the villain Doctor Doom — a role swap no fan saw coming.