Biggest Oscar Upsets in History: Best Picture and Acting Shocks

Biggest Oscar upsets in history are the ceremony moments when Academy voters overturned consensus, rewrote narratives, and left theatres — and living rooms — in audible shock. Some upsets arrived through split votes and campaign fatigue; others through envelope errors or category quirks that still fuel debate decades later. From Moonlight defeating La La Land at the 89th Academy Awards to Marisa Tomei’s 1993 Supporting Actress win, these results define Oscar lore as much as predictable sweeps do. This guide ranks the most consequential Best Picture and acting surprises using official Academy records, with brief context on why each outcome stunned pundits.

We focus on competitive wins that defied frontrunner status — not honorary prizes or technical-category surprises. For full winner chronologies, see our Oscar Best Picture winners by year complete list. International breakthroughs appear in foreign films that won Best Picture Oscars. Performers who never captured gold despite repeated nominations are covered in actors who never won an Oscar. This article does not duplicate red-carpet outfit breakdowns — those angles belong elsewhere. Here we track votes, records, and ceremony-night chaos.

Biggest Oscar Upsets in History: How We Define an Upset

An upset, for this ranking, means the winner was not the overwhelming pre-show favorite in major prediction aggregators or trade press consensus at the time of the ceremony — or the result contradicted dominant narrative momentum heading into the final week. We cite the Academy Awards Database for winners and nominees. Campaign anecdotes labeled reportedly when not confirmed in official archives. Upsets are ordered by cultural impact and vote surprise, not box office alone.

Best Picture carries the heaviest weight in any list of the biggest Oscar upsets in history because the entire membership votes and the category crowns Hollywood’s self-image for a year. Acting upsets can hinge on a few hundred voters in a single branch before the full body weighs in — producing Marisa Tomei-scale surprises that still baffle statisticians.

Moonlight Over La La Land (2017): The Modern Benchmark

No survey of the biggest Oscar upsets in history skips the 89th Academy Awards. La La Land entered the Dolby Theatre as the presumptive Best Picture winner after a record-tying 14 nominations and dominant guild momentum. Moonlight, Barry Jenkins’s intimate Miami drama, was the critical favorite but sat behind the musical in many final odds charts.

When presenters opened the final envelope, La La Land producers briefly accepted before accountants corrected the error: the Best Picture card had been mis-handled. Moonlight was the actual winner — a first for an all-Black cast in Best Picture and a defining entry among the biggest Oscar upsets in history. We keep envelope detail brief here because USA Celebs will publish a dedicated envelope-mistake deep dive separately. The substantive upset remains the vote itself: a small-budget indie defeating a genre-reviving juggernaut.

Crash Over Brokeback Mountain (2006): Culture-War Cinema

The 78th Academy Awards produced one of the most debated biggest Oscar upsets in history when Paul Haggis’s ensemble drama Crash defeated Ang Lee’s Brokeback Mountain for Best Picture. Lee still won Best Director — a split that fuels split-vote theories to this day. Brokeback had won the PGA, DGA, and BAFTA; Crash had SAG Ensemble.

Supporters of the upset outcome argue Crash‘s Los Angeles mosaic resonated with older Academy voters uncomfortable with the western romance’s subject matter. Critics call it the worst Best Picture choice of the 2000s. Either way, it belongs on every serious biggest Oscar upsets in history list because the favorite lost on the industry’s largest stage.

Shakespeare in Love Over Saving Private Ryan (1999)

Steven Spielberg’s Saving Private Ryan arrived at the 71st Academy Awards as the World War II epic destined to win Best Picture after a devastating D-Day opening and strong box office. Shakespeare in Love, the Weinstein-era period rom-com, had charm and guild support but looked like a long shot on paper.

It won Best Picture anyway — while Spielberg took Best Director. The split mirrored 2006 and remains a case study in late-campaign surges among the biggest Oscar upsets in history. Harvey Weinstein’s promotional tactics are widely discussed in retrospect; the official record simply lists Shakespeare in Love as the victor over one of the most acclaimed war films ever made.

How Green Was My Valley Over Citizen Kane (1942)

The granddaddy of the biggest Oscar upsets in history — if measured by auteur prestige — came at the 14th Academy Awards. Orson Welles’s Citizen Kane, now routinely cited as the greatest American film, lost Best Picture to John Ford’s How Green Was My Valley, a Welsh mining-family drama.

Reportedly, Hearst-adjacent industry hostility toward Welles and Kane‘s thinly veiled portrait of William Randolph Hearst hurt its chances. Ford’s film was genuinely beloved, but history sided with Kane. No list of the biggest Oscar upsets in history is complete without this foundational shock — proof that the Academy sometimes crowns the safe choice over the revolutionary one.

Parasite (2020): Foreign-Language Best Picture Breakthrough

Bong Joon Ho’s Parasite entered the 92nd Academy Awards with Palme d’Or prestige and strong U.S. box office for a subtitled film, yet Best Picture still felt like a ceiling. Non-English films had won International Feature (formerly Foreign Language Film) repeatedly; none had taken the top prize.

Parasite won Best Picture, Best Director, Best Original Screenplay, and International Feature — a sweep that redefined what global cinema could achieve at the Oscars. It ranks among the biggest Oscar upsets in history because it broke a language barrier voters had enforced for nine decades. See our foreign films that won Best Picture Oscars for the full international context.

CODA (2022): Streaming’s Best Picture Win

Apple TV+’s CODA won Best Picture at the 94th Academy Awards after a pandemic-era ceremony where streaming releases had only recently become permanently eligible. The Power of the Dog, Jane Campion’s western psychodrama, led most precursor races and looked like the favorite.

CODA‘s victory marked the first Best Picture win for a streaming platform in the Academy’s primary category — a business-model upset as much as an artistic one. Troy Kotsur’s Supporting Actor win added to the night’s underdog energy. Among the biggest Oscar upsets in history, CODA proves platform stigma could collapse faster than pundits expected once voters watched at home.

Acting Upsets: Marisa Tomei (1993)

Best Picture dominates headlines, but acting categories supply some of the biggest Oscar upsets in history on a pure odds basis. Marisa Tomei won Best Supporting Actress at the 65th Academy Awards for My Cousin Vinny — a comedic turn in a courtroom comedy — over a field that included Vanessa Redgrave, Judy Davis, Joan Plowright, and Miranda Richardson.

Tomei was so unexpected that an urban legend falsely claimed presenter Jack Palance read the wrong name. The Academy confirmed the vote was legitimate. Her win remains the gold standard for comedy performances breaking through drama-heavy slates — a permanent fixture on biggest Oscar upsets in history lists and Oscar trivia nights.

Adrien Brody Over Daniel Day-Lewis and Jack Nicholson (2003)

At the 75th Academy Awards, Daniel Day-Lewis (Gangs of New York) and Jack Nicholson (About Schmidt) split the Best Actor frontrunner narrative. Adrien Brody, 29, won for The Pianist — becoming the youngest Best Actor winner at that time and delivering an impassioned acceptance speech that included kissing presenter Halle Berry.

Brody’s victory exemplifies how Holocaust-era drama and a transformative physical performance can overtake marquee names — a classic pattern in the biggest Oscar upsets in history. Day-Lewis would win later; Nicholson already had three Oscars. Brody’s win was the shock.

Olivia Colman Over Glenn Close (2019)

The 91st Academy Awards Best Actress race looked like Glenn Close’s year after seven prior nominations without a competitive win. The Wife carried overdue narrative momentum. Olivia Colman’s Queen Anne in The Favourite was critically adored but reportedly sat second in many final predictions.

Colman won — delivering a tearful, disbelieving speech — while Close sat gracious in the audience. The result extended Close’s record among actors who never won an Oscar and added another acting chapter to the biggest Oscar upsets in history canon. Colman was deserving; the surprise was denying a legacy narrative on the industry’s biggest night.

Why Upsets Happen: Split Votes, Campaigns, and Momentum

Patterns repeat across the biggest Oscar upsets in history:

• Split categories — Best Director and Best Picture winners diverge (Shakespeare in Love/Saving Private Ryan; Crash/Brokeback Mountain), suggesting picture voters spread support differently than director voters.
• Genre bias — War epics and biopics historically beat comedies unless comedies build overwhelming goodwill (Tomei).
• Overdue fatigue — Voters sometimes resist crowning a narrative-heavy favorite (Close vs. Colman).
• Platform and language barriers collapsing — Parasite and CODA prove eligibility and viewing habits matter as much as taste.
• Human error — Envelope mishaps amplify genuine upsets (Moonlight/La La Land) without creating them.

None of these factors diminish winners; they explain how the biggest Oscar upsets in history emerge from a preferential voting system designed to reward consensus — until it does not.

Honorable Mentions and Near-Upsets

Other results border the biggest Oscar upsets in history without quite matching shock value: Rocky over Taxi Driver and All the President’s Men (1976), Dances With Wolves over Goodfellas (1990), and Chicago over The Pianist and The Lord of the Rings: The Two Towers (2002). Each favored accessible or middlebrow winners over grittier rivals — a recurring Academy tendency worth tracking alongside headline shocks.

For year-by-year context on winners who were not upsets, browse our Oscar Best Picture winners by year complete list.

Quick Reference: Biggest Oscar Upsets in History

• Best Picture: Moonlight over La La Land (2017), Crash over Brokeback Mountain (2006), Shakespeare in Love over Saving Private Ryan (1999), How Green Was My Valley over Citizen Kane (1942), Parasite (2020), CODA over The Power of the Dog (2022)
• Acting: Marisa Tomei, Supporting Actress (1993); Adrien Brody, Best Actor (2003); Olivia Colman over Glenn Close, Best Actress (2019)

Explore More Awards Coverage

• Chronicle every winner in our Oscar Best Picture winners by year complete list.
• Track international breakthroughs in foreign films that won Best Picture Oscars.
• Meet the snubbed legends in actors who never won an Oscar.
• Visit our Awards archive for ceremony history and records.