Documentary Filmmaker

Iona
Horton

Geologist turned filmmaker, following invisible supply chains to find the stories nobody's telling.

View Films
Iona Horton
Pulitzer Center Fellow
MS Journalism, Columbia University
MEarthSci Earth Sciences, University of Oxford
duPont / Judy F. Crichton Award Winner

Where Science
Meets Story

Iona Horton is a British documentary filmmaker, born in Hong Kong and based in New York. She holds an MEarthSci in Earth Sciences from the University of Oxford and an MS in Journalism from Columbia University, where she specialized in documentary film.

Before picking up a camera, she spent seven years as a sustainability consultant, tracking how materials move through global supply chains and what happens when they reach their end of life.

Her work explores the invisible systems connecting humanity to the natural world - from the endangered wood inside every violin bow to the global butterfly trade nobody knows exists. She finds these stories the same way every time: a chance encounter reveals a hidden world, and she follows the thread.

She believes the environmental movement has been selling sacrifice for too long - that the sustainable future needs to be made so exciting, so beautiful, and so obviously worth building that people sprint toward it. Her films, writing, and public speaking are all in service of that vision.

She is a Pulitzer Center Fellow, the founder of Carsaig Productions, and has been invited to join the board of the International Pernambuco Conservation Initiative. Her film The Final Bow is a winner of the duPont / Judy F. Crichton Award, recognizing hard-hitting journalism and excellence in long-form narrative and visual storytelling.

The Work

In Production

Iona Horton surrounded by butterflies in a breeding facility

Feature Documentary

The Butterfly Breeders

The global live butterfly trade and the communities and habitats it sustains.

Workers planting pernambuco seedlings in a nursery in Brazil's Atlantic Forest

Feature Documentary

Heartwood

The fight to save pernambuco and restore Brazil's Atlantic Forest.

Selected Credits

Collaborations with award-winning filmmakers and production companies.

Manhood documentary — SXSW 2026
SXSW World Premiere

Manhood

Post-Production Coordinator

Feature documentary directed by Daniel Lombroso (formerly of The New Yorker), an Outerboro Films production in association with World of Wonder. World premiere in the Documentary Spotlight at SXSW 2026, with executive producers Fenton Bailey, Randy Barbato, Sheila Nevins, and Penny Lane. Praised by Variety, IndieWire, and The Hollywood Reporter.

Dispatches from a Foreign Body
Emmy-Winning Studio In Production

Dispatches from a Foreign Body

Field Producer & Cinematographer

With filmmaker Eugen Bräunig and Houseguest Pictures — an Emmy-winning studio (14 News & Documentary Emmy nominations, three wins) behind Welcome to Chechnya (HBO), The Vow (HBO), Harry & Meghan (Netflix), and Light & Magic (Disney+).

The Loves of Emma Bardac / ArtMusic
Director · ArtMusic Ongoing

The Loves of Emma Bardac / ArtMusic

Director · Editor & Creative Collaborator

Creative collaborator to Grammy Award-winning classical music producer Thomas Mowrey. Iona directed the ArtMusic series — landmark high-definition films pairing the music of Claude Debussy with restored and re-imagined Impressionist visuals — and is developing a museum exhibition built around the film and the story of Emma Bardac and her husband, the composer Claude Debussy.

Surviving Sandy Hook
BBC Two · This World True Vision TV

Surviving Sandy Hook

Production Assistant & Researcher

Part of the award-winning BBC Two series This World, produced by True Vision TV. Over the course of a year, the film follows families of victims and survivors of the Sandy Hook shooting as they rebuild their lives — a story of grief, hope, love, and guns.

Looking After Mum
BBC · Children in Need Special True Vision TV

Looking After Mum

Production Assistant & Researcher

A BBC Children in Need special produced by True Vision TV, following brothers Tom (10) and Joe (14) as they care for their mother through a critical liver condition — one story among an army of unsung child carers across the country.

Micro Shorts

Micro Short

Harumi's Flowers

A Japanese couple balance creativity and happiness with the financial realities of their Brooklyn dried flower business.

Micro Short

Risking It All on a Requiem

A Brooklyn-based conductor risks bankruptcy to make classical music concerts popular with young people.

Festivals & Awards

Big Sky Documentary Film Festival

Top 10 Finalist · Best Short Documentary

One of the premier documentary festivals in the United States, held annually in Missoula, Montana.

duPont / Judy F. Crichton Award

Columbia University

Honors documentary work that encapsulates hard-hitting journalism, excellence in long-form narrative and visual storytelling, and historical perspective on issues concerning American culture.

Pulitzer Center Fellow

Pulitzer Center on Crisis Reporting

A fellowship supporting impactful journalism and documentary work on underreported global issues.

DC Environmental Film Festival

Emerging Filmmakers Showcase

Washington DC’s premier festival dedicated to environmental storytelling and advocacy through film.

Santiago Wild Festival

Nominated · Chronicles of the Land Competition

Chile’s international wildlife and environmental film festival, celebrating stories of conservation and the natural world.

Columbia DocFest '25

Columbia University Graduate School of Journalism

Selected for Columbia's annual showcase of documentary work from emerging and established filmmakers.

Coverage

Let's Talk

For film inquiries, festivals screenings, community screenings, press, or collaborations - reach out below.

ionahortonfilms@gmail.com

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