Sidse Babett Knudsen, the actress the Borgen trap could not contain

Sidse Babett Knudsen

Photo: Elena Ternovaja / CC BY-SA 3.0, via Wikimedia Commons

Born	November 22, 1968 Copenhagen, Denmark
Occupation	Actress
Known for	Inferno, After the Wedding, The Family Plan 2
Awards	Robert · Bodil · César · Rose d'Or · Chevalière de l'Ordre des Arts et des Lettres (2014)

The part came with a warning attached. When Borgen turned Sidse Babett Knudsen into Denmark’s most internationally recognized television actress — her prime minister Birgitte Nyborg becoming, in certain circles, the aspirational image of a generation of female politicians and viewers — she articulated the trap herself. She could not now play the prime minister’s wife. She could not be the supportive woman in the background whose role exists to validate someone else’s arc. Borgen had closed that door by opening the one it opened.

She was born in Copenhagen in November 1968 and grew up in a household that understood displacement from the beginning: her photographer father and schoolteacher mother spent time in Tanzania doing volunteer work, and the experience of living between cultures landed early. At 18, with barely any French, she moved to Paris and spent six years studying at the Théâtre de l’Ombre, doing experimental work, supporting herself with whatever jobs were available, and learning to inhabit a language that was not hers. Those years in Parisian theater are the foundation that most accounts of her career skip over in a sentence.

She returned to Denmark in the early 1990s and began accumulating stage credits — at OVINE 302, at Betty Nansen Theatre, at the Royal Danish Theatre. Her screen breakthrough came in the improvised comedy Let’s Get Lost, which won her both the Robert and Bodil Awards for Best Actress, the two most significant Danish film prizes. She repeated those wins with The One and Only two years later. The industry had a category for her: the reliably brilliant Danish actress.

Then Susanne Bier cast her in After the Wedding, the 2006 family drama that opened in international markets and introduced her work to audiences who read subtitles. It was the first sign that the category was too small.

Borgen ran from 2010 to 2013 across three series, and returned for a fourth in 2022 via Netflix. Knudsen played Birgitte Nyborg through all 38 episodes, and the performance became something difficult to name: a character study that functioned simultaneously as a political analysis, a feminist argument, and a genre-defining piece of long-form television. The series won the BAFTA International Programme award in 2012 and a Peabody the following year. In a less interesting story, this would be where the narrative stopped and she became an institution.

Instead, she said yes to Peter Strickland. The Duke of Burgundy, the British director’s 2014 feature, gave her the role of Cynthia — a lepidopterology lecturer in a domestic relationship that gradually reveals itself to be scripted, maintained by her partner’s desire to submit rather than her own will to dominate. It is a film about performance, about the difference between the person who initiates an act and the person who sustains it. It won Knudsen the Best Actress prize at the Torino Film Festival and exists at the opposite end of the prestige spectrum from what Borgen had signaled she would do next.

She spent that same year in another kind of genre experiment: Kristian Levring’s revisionist western The Salvation, opposite Mads Mikkelsen, where she played Madelaine — a mute widow in a man’s landscape who moves through the film as its moral weight rather than its narrative engine. And the following year, entirely in French, she appeared in Christian Vincent’s courtroom drama L’Hermine — a small film about a presiding judge and a juror that won her the César Award for Best Supporting Actress in 2016. The César is not a career footnote. It is France’s most prestigious film acting prize, awarded by cinema professionals, given to her in a language she had learned as a teenager living in a Parisian apartment with no money and no professional certainty.

Her Hollywood adjacency — the role of Dr. Elizabeth Sinskey, WHO Director-General, in Ron Howard’s Inferno opposite Tom Hanks, and the part of Theresa Cullen in Westworld’s first two seasons — has been the least discussed dimension of her international career, partly because it was the most conventional. Playing a Dan Brown antagonist is not the same work as playing Cynthia in The Duke of Burgundy, and the critical consensus has never pretended otherwise. What those years established was a presence in large-scale English-language productions that did not require her to become a different kind of actress. She appeared, did the work, and returned to the European cinema where she had more room to move.

Club Zero, Jessica Hausner’s 2023 Cannes competition entry, gave her the role of a charismatic nutrition teacher who encourages her students toward dangerous self-denial through a logic that seems rational at each step and catastrophic as a whole. It is exactly the kind of film she has consistently been drawn to: one where the discomfort builds without announcing itself, where the performance works by withholding rather than expressing.

In 2025 she appeared in three new projects. The Great Arch, directed by Stéphane Demoustier, premiered at Cannes. Martin Bourboulon’s 13 Days, 13 Nights — a French-language drama about the 2021 Kabul evacuation, in which she co-stars alongside Roschdy Zem and Lyna Khoudri — screened out of competition at the same festival. And on Apple TV+, Prime Target cast her as Professor Andrea Lavin, a mathematician whose number theory intersects with something darker than pure academia.

She is currently working across three languages simultaneously. That is the architecture she has built: not a single career in one national industry but a presence distributed across European and American cinema that resists easy categorization. The next project she commits to will tell us something about whether the transnational model she has operated in for the past decade continues to expand, or whether the consolidation of the industry around franchise structures is narrowing the space for exactly the kind of work she chooses.