SSHack Club
Sunbeam Seattle
29 Aug 2026 · Seattle
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10 upcoming
Hackathons in Seattle
10 upcoming hackathons in Seattle
They run from August through to October 2026. AI is the most common theme, on 2 of the 10 listings. Organisers listing here include Hack Club, Seattle JS and Devpost, Inc. Dates, prizes and registration links on every listing, updated weekly.
upcoming hackathons
1HSeattle JS
1 Hour Hackathon + Presentations!
30 Aug 2026 · Seattle
EHDevpost, Inc.
EmP Hackfest Summer 2026
5-6 Sep 2026 · Seattle
DTSeattle Career Development & Experiential Learning Events
Defense Tech Jam Hackathon
18-20 Sep 2026 · Seattle
PRIZE$5,000
HNHack NW Group
Hack Northwest
5-6 Oct 2026 · Seattle
WSDevpost, Inc.
WWU Social Justice Hackathon
16-18 Oct 2026 · Seattle
DHBhoomi Girish
DubHacks HACKATHON
17-18 Oct 2026 · Seattle
WMManisha Priyadarshini
Waterlines: Mapping Land & Water Advocacy Along the Duwamish | Community Mapping + Environmental Storytelling Hackathon | PNW Climate Week
24 Oct 2026 · Seattle
SAClaude Community Events
Seattle | AI Week Claude Impact Lab Hackathon
25 Oct 2026 · Seattle
SASkillsheet events
[SEA AI WEEK] Hackathon
25 Oct 2026 · Seattle