75th World Science Fiction Convention
|Worldcon 75, the 75th World Science Fiction Convention|
|Venue||Helsinki Exhibition and Convention Centre|
|Inaugurated||9–13 August 2017|
The 75th World Science Fiction Convention (Worldcon), also known as Worldcon 75, was held 9–13 August 2017 at the Helsinki Exhibition and Convention Centre in Helsinki, Finland. This location was selected in August 2015 by the members of the 73rd World Science Fiction Convention in Spokane, Washington.
The convention chair was Jukka Halme, and the vice-chairs were Karo Leikomaa and Colette H. Fozard.
Guests of Honour
The Guests of Honour for Worldcon 75 were Swedish author and translator John-Henri Holmberg, Jamaican author Nalo Hopkinson, Finnish author Johanna Sinisalo, French artist and illustrator Claire Wendling (absent due to illness), and American author Walter Jon Williams.
- DC-17, to be held at the Marriott Wardman Park in Washington, D.C., on 16–20 August 2017. The bid co-chairs were Michael Nelson and Warren Buff.
- Helsinki in 2017, to be held at the Helsinki Exhibition and Convention Centre in Helsinki, Finland, on 9–13 August 2017. The bid chair was Eemeli Aro.
- Montreal in 2017, to be held at the Palais des congrès de Montréal in Montreal, Quebec, Canada, on 31 August–4 September 2017. The bid chair was Jannie Shea.
- Nippon in 2017, to be held at the Shizuoka Convention & Arts Center in Shizuoka, Japan, on 23–27 August 2017. The bid chair was Hideaki Kawai.
A bid for New York City in 2017 was floated for several years but dropped before reaching the commitment stage. The Montreal bid was originally announced for 2019 but shifted to the earlier date in 2013.
The 2017 site selected by the voters was announced during Sasquan's third World Science Fiction Society business meeting, on Saturday, August 22, 2015. With 1363 votes out of 2625 valid ballots, Helsinki won on the first ballot and will operate as "Worldcon 75". DC17 ran second with 878 votes. Montreal third with 228, and Nippon fourth with 120. Sites receiving write-in votes included Night Vale, Minneapolis in '73. Gallifrey, and All of the Above.
At the end of the convention, organizers announced a total attendance of 7,119, out of a total of 10,616 memberships and day passes sold, making Worldcon 75 the second-largest Worldcon to date and the largest ever held outside North America. However, the final official figure, including day members across all days, was 7,949 members in attendance at some point during the convention. 
The Hugo Awards, named after Hugo Gernsback, are presented every year for the best science fiction or fantasy works and achievements of the previous year. The results are based on the ballots submitted by members of the World Science Fiction Society. Other awards, including the Astounding Award for Best New Writer (since 1973; named "John W. Campbell Award for Best New Writer" until 2019), are also presented at each year's Worldcon.
- Best Novel: The Obelisk Gate by N. K. Jemisin
- Best Novella: "Every Heart a Doorway" by Seanan McGuire
- Best Novelette: "The Tomato Thief" by Ursula Vernon
- Best Short Story: "Seasons of Glass and Iron" by Amal El-Mohtar
- Best Related Work: Words Are My Matter: Writings About Life and Books by Ursula K. Le Guin ()
- Best Graphic Story: Monstress, Volume 1, written by Marjorie Liu, art by Sana Takeda, colors by
- Best Dramatic Presentation, Long Form: Arrival, screenplay by Eric Heisserer; story by ; directed by Denis Villeneuve ()
- Best Dramatic Presentation, Short Form: The Expanse, "Leviathan Wakes", screenplay by Mark Fergus & Hawk Ostby, directed by Terry McDonough
- Best Professional Editor, Long Form: Liz Gorinsky
- Best Professional Editor, Short Form: Ellen Datlow
- Best Professional Artist: Julie Dillon
- Best Semiprozine: Uncanny Magazine, edited by Lynne M. Thomas and Michael Damian Thomas
- Best Fancast: Tea and Jeopardy, edited by Emma Newman and Peter Newman
- Best Fanzine: Lady Business, edited by
- Best Fan Writer: Abigail Nussbaum
- Best Fan Artist: Elizabeth Leggett
- John W. Campbell Award for Best New Writer: Ada Palmer
- Atorox Award: Maiju Ihalainen
- Seiun Award: Yasumi Kobayashi (novel)
- Big Heart Award: Carolina Gómez Lagerlöf
- "Worldcon committee and leadership team". Worldcon 75. Archived from the original on 19 March 2017. Retrieved 18 March 2017.
- "Worldcon Guests of Honour". Worldcon 75. Retrieved 22 August 2015.
- "Worldcon and NASFiC Bids". Worldcon [Official]. World Science Fiction Society. 16 February 2015. Archived from the original on 2015-04-07. Retrieved 4 April 2015.
- "Site Selection". Sasquan. 19 February 2015. Retrieved 4 April 2015.
- "Committee". Helsinki in 2017 web site. Helsinki in 2017. Retrieved 4 January 2014.
- Glyer, Mike (21 October 2013). "Future Worldcon Bids". File 770. Retrieved 4 September 2014.
- Glyer, Mike (26 September 2012). "Future Worldcon Bidders". File 770. Retrieved 4 September 2014.
- "2017 Site Selection Results" (PDF). Sasq-Watch (7). 73rd World Science Fiction Convention. August 22, 2015. Retrieved August 22, 2015.
- "Hugo Award FAQ". The Hugo Awards. World Science Fiction Society. Retrieved 2018-11-11.
74th World Science Fiction Convention
MidAmericon II in Kansas City, United States (2016)
| List of Worldcons
75th World Science Fiction Convention
Worldcon 75 in Helsinki, Finland (2017)
76th World Science Fiction Convention
Worldcon 76 in San Jose, United States (2018)