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Welcome to
Seattle Worldcon 2025!

Building Yesterday’s Future–For Everyone

August 13–17, 2025

Our Guests of Honor

Martha Wells, a white woman with shoulder-length wavy dark blonde hair and waring a dark top, looks at the camera with a slight smile.

Martha Wells

Donato Giancola, a man with short-cut dark hair and goatee, wearing a grey t-shirt and jeans, sitting in the midst of an artist's studio, with finished and in-progress paintings and paint supplies around him.

Donato Giancola

Bridget Landry, a white woman with blonde medium-length hair, looking directly at the camera.

Bridget Landry

Alexander James Adams, a white man with long brown and grey hair in a ponytail, wearing a black sleeveless shirt and cowboy hat, plays a guitar and sings into a microphone.

Alexander James Adams

Our Poet Laureate

Brandon O'Brien, a black man with short hair and goatee, wearing glasses, with a slight sly grin on his face.

Brandon O’Brien

Our Hosts

K Tempest Bradford, a Black woman with curly black hair, wearing glasses, black lipstick, and a red and orange top, smiles at the camera.

K. Tempest Bradford

Nisi Shawl

Five people dressed in retrofuturistic clothing, of varied apparent races, genders, and ages. One is in a hover chair, and one is using a jetpack.

The 83rd World Science Fiction Convention

Held in downtown Seattle, Washington, August 13–17, 2025. Bringing Worldcon back to Seattle for the first time since 1961!

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Venue

The Seattle Convention Center’s new Summit expansion in the heart of downtown Seattle, surrounded by amazing views of the city, mountains, and water.

Program

Hundreds of hours of panel programming, presentations, workshops, events, table talks, autograph signings, kids programming, and more. Now soliciting panelists!

The Hugo Awards

Science fiction’s most prestigious award, administered and voted on by members of the World Science Fiction Convention—this means you!

Volunteer

A Worldcon is run entirely by unpaid, volunteer staff. You too can join this community of makers, doers, and shapers, for a few hours during the con, or throughout the planning process.

Recent Updates

Local Flavor: Seattle Style Teriyaki

Teriyaki is everywhere in Seattle, but it’s not quite like the teriyaki you get elsewhere. Invented and popularized by Toshi Kasahara at Toshi’s Teriyaki, Seattle teriyaki has been a favorite locally since the 1970s. Plenty of recipes are available online, but for a special Seattle twist, add a little pineapple juice to the marinade.

Newsletter October 2024: Announcing the Seattle Worldcon 2025 Short Story Writing Contest!

Announcing our short story writing contest, advertising rates for the souvenir program book, membership rates will increase Oct. 21st, and we’re looking for more volunteers!

Fantastic Fiction: Knights versus Aliens: The High Crusade by Poul Anderson

Science fiction often begins with a question of “what if”? And in 1960, Poul Anderson asked just such a question: What if aliens attempting to invade the Earth encountered a troop of medieval knights? And what if the knights won the ensuing struggle and took to the stars? This is the premise of The High Crusade, one of the most offbeat and entertaining science fiction novels of the early 1960s…

Around Seattle: Seattle Central Library

The flagship branch of the Seattle Public Library system is a futuristic crystal palace designed by renowned architect Rem Koolhaas.

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