SVYCA Youth for Earth (Y4E) Hackathon
Silicon Valley Youth Climate Action · Stanford University, Stanford
29-day build with a submission deadline; $2,700 prizes.
Open$2,700 prizes
The Bay Area hackathon calendar
Everything worth building at,
gathered in one place.
Every hackathon across San Francisco and the wider Bay Area, kept current morning and evening. Subscribe once and the next one finds you — no more combing through invite links and half-dead group chats.
Add it to your calendar
Works with Google, Apple, Outlook and anything else that reads a calendar link. New events arrive on their own.
/calendar.icsWhat’s coming up
September 2026
Shower Hacks
Shower Hacks · location on event page
2-day build with a submission deadline; $9,550 prizes.
Check page$9,550 prizesStartup Speedrun Hackathon
Brainbase Labs · Cloudflare, San Francisco
8-hour build with judging, team formation; $27.5k+ prizes.
Open$27.5k+ prizesBig Earth Hackathon Guest Speaker Session: FireWERX (Part 2)
Stanford Big Earth Hackathon · Stanford
1-hour build.
ApprovalBuild Your AI Co-Founder Hackathon
David Mumuni · 3120 Scott Blvd, Santa Clara
10-hour build with judging, demos, team formation; prizes listed.
OpenPrizes listedBuild Your AI Co-Founder Hackathon
David Mumuni · 3120 Scott Blvd, Santa Clara
10-hour build with judging, demos, team formation; prizes listed.
ApprovalPrizes listedAgentic AI Hackathon: AWS Community Day Bay Area 2026
AWS Community Bay Area · AWS Builder Loft, San Francisco
15-day build with judging, demos, team formation, a submission deadline; $3,200 prizes.
Open$3,200 prizesAI Agents for Data Teams: A Practical Mini-Hackathon
Bay Area Snowflake User Group · 135 Constitution Dr, Menlo Park
3-hour build with team formation.
OpenCollaborative Agent Hackathon @ Stanford
Flower Labs · 389 Jane Stanford Way, Stanford
10-hour build with judging, demos, team formation; $5,000, prizes.
Open$5,000, prizesThe AI Conference Hack Day 2026
[SF] HackerSquad · Mission Bay, San Francisco
10-hour build with demos, team formation; prizes listed.
OpenPrizes listedAI Security Engineering Hackathon
RocketRide · AWS Builder Loft, San Francisco
5-hour build with judging, team formation, a submission deadline; $10,000 prizes.
Approval$10,000 prizesRebuild With Jev #3: Decision Bot Architecture + Hackathon
PromptQL Events · San Francisco
3-hour build with judging, demos, team formation.
Sold outMission Applied: Maritime Dual-Use Mixer
Berkeley Gateway Accelerator · Berkeley
2-hour build with judging, team formation.
ApprovalFix My Agent: Make Your Agent Production-Ready | AI Valley × PostHog × GMI Cloud
AI Valley · San Francisco
3-hour build with demos, team formation.
ApprovalEMBEDDED SF: CraftifAI Physical AI Hackathon
Devnovate · San Francisco
10-hour build with demos, team formation; $1,000 cash.
Approval$1,000 cashWomen Build Oakland: From Idea to App in One Day
CoCo Noir Labs Calender · Oakland
9-hour build with judging, team formation; prizes listed.
ApprovalPrizes listedAgent Hackathon
Solana San Francisco · San Francisco
8-hour build with judging, demos, team formation; $1500 prizes.
Approval$1500 prizesBig Earth Hackathon Guest Speaker Session: Andy Abranches (PG&E)
Stanford Big Earth Hackathon · Stanford
1-hour build.
OpenPicnic with Builders at Stanford
SF Startup Labs · Stanford University, Stanford
2-hour build with team formation.
Approval- Open
October 2026
ApprovalOakland Tech Week: The Future of Oakland
Hack the Hood Community · Oakland
2-hour build with demos, team formation.
ApprovalReal-Time Video Agents Hack - SF
tokens& · San Francisco
10-hour build with judging, demos, team formation; prizes listed.
OpenPrizes listedSF Hacks × GDG AI Hackathon 2026
Daksh Kumar · Student Life Events Center / Annex I, San Francisco
10-hour build with demos, team formation; prizes listed.
OpenPrizes listedHack the Feed: Creator Tools Hackathon with Oriane, GMI Cloud & Lovable at Amplitude HQ!
Oriane.xyz Video Intelligence · Amplitude Analytics, San Francisco
5-hour build with demos, team formation; $300 prizes.
Sold out$300 prizesBig Earth Hackathon Workshop: Google Earth Engine
Stanford Big Earth Hackathon · Stanford
2-hour build.
OpenThe Hidden Genius Project | Oakland Tech Week Youth Hackathon 2026
eventbrite.com · Henry J. Kaiser Center for the Arts, Oakland
24-hour build with judging.
Check pageDublin Hacx
Emerald High School · SAP Office — San Ramon, CA, San Ramon
2-day build with a submission deadline; $2,250 prizes.
Check page$2,250 prizesStanford Hub - 7th Hack-Nation Global AI Hackathon
Hack-Nation's Global AI Hackathons · Palo Alto
23-hour build with judging, team formation, a submission deadline; $30k+ cash.
Open$30K+ cashThe Multiplayer Coding Hackathon
Coshell · Mission District, San Francisco
9-hour build with judging, team formation; $500 prizes.
Open$500 prizesThe AI Commerce Gallery - Hackathon | Walt Disney Family Museum
AI Valley · San Francisco
12-hour build with judging, demos, team formation, a submission deadline; prizes listed.
OpenPrizes listedSupabase Select 2026 Hackathon
Supabase Community Events · 580 20th St, San Francisco
8-hour build with judging, demos, team formation; prizes listed.
WaitlistPrizes listedHack-Nation 7th Global AI Hackathon
Hack-Nation's Global AI Hackathons · Downtown North, Stanford
2-day build with judging, team formation, a submission deadline; $30k+ cash.
Approval$30K+ cashOctober 3 Hackathon
Frontier Tower SF · Frontier Tower @ Spaceship 995 Market Street, San Francisco
13-hour build.
OpenBig Earth Hackathon Guest Speaker Session: Seth Schalet (Santa Clara FireSafe Council)
Stanford Big Earth Hackathon · Stanford
1-hour build.
ApprovalBig Earth Hackathon Guest Speaker Session: David Shew (Wildfire Defense Works)
Stanford Big Earth Hackathon · Stanford
1-hour build.
ApprovalPax Silica Hackathon: SF Tech Week
Builderbase Hackathons · 2 Embarcadero Ctr, San Francisco
3-hour build with demos, team formation.
Open#SFTechWeek 5-Dee Hacks : Agency - Human Flourishing
5-Dee Studios · San Francisco
6-hour build with demos, team formation; prizes listed.
ApprovalPrizes listedAI Hackathon: Sales Copilot AI
TatianaSF · Northern Waterfront, San Francisco
8-hour build with judging, demos, team formation; prizes listed.
OpenPrizes listedEveresteer Hedge Fund Hackathon: San Francisco #SFTechWeek
Everesteer · 11 Pearl St, San Francisco
5-hour build; $1,000 prizes.
Approval$1,000 prizes- Approval
Code. Fix. Drink. Repeat. with WeAreDevelopers & Snyk
WeAreDevelopers · 260 California St suite 600, San Francisco
3-hour build with demos, team formation; prizes listed.
OpenPrizes listedCyberdefense Hackathon
tokens& · Financial District, San Francisco
10-hour build with judging, demos, team formation, a submission deadline.
Open#SFTechWeek - Decision-Grade AI @ Stanford ⚡️ A Buildathon on LLM Trust
ezio · Stanford, California, USA, Stanford
24-hour build with a submission deadline.
Check pageAI-Native Startup Hackathon
BondHaus · San Francisco
10-hour build with judging, demos, team formation.
OpenAI-Native Startup Hackathon | #SFTechWeek
Tech Events SF | BridgeUs · Lower Haight, San Francisco
11-hour build with judging, demos, team formation.
OpenMulti Model Hackathon - #SFTechWeek
Builderbase Hackathons · Frontier Tower 🧑🚀, San Francisco
9-hour build with demos, team formation.
OpenTech Week Hackathon
Frontier Tower SF · Frontier Tower @ Spaceship 995 Market Street, San Francisco, SF
10-hour build.
OpenBuild AI agents that own their inference - #SFTechWeek
[SF] HackerSquad · AWS Builder Loft, 2nd Floor, 525 Market St, SF
9-hour build with judging, demos.
ApprovalBig Earth Hackathon Guest Speaker Session: Joaquin Ramirez (Technosylva)
Stanford Big Earth Hackathon · Stanford
1-hour build.
OpenCompany Brain Hackathon: Build an AI Agent That Knows Your Organization
TechEquity Ai - Silicon Valley · 135 Constitution Dr, Menlo Park
4-hour build with judging, demos, team formation.
OpenAWS Community Day - AI Edition
AWS Community Bay Area · AWS Builder Loft, San Francisco
10-hour build with demos, team formation; $3,200 prizes.
Open$3,200 prizes- ApprovalPrizes listed
SF Frontier Hackathon: Build your Autonomous Code Factory
Obvious Community Events · San Francisco
10-hour build with demos, team formation; $30k prizes.
Approval$30K prizesFAST FORWARD
Vercel Events · San Francisco
8-hour build with judging, demos, team formation, a submission deadline.
ApprovalBig Earth Hackathon Guest Speaker Session: Wei-ting Chen (Stanford Community Engagement)
Stanford Big Earth Hackathon · Stanford
1-hour build.
OpenVenture Night@TechCrunch Disrupt 2026 – The Ultimate Startup & Investor Experience!
TechEmbassy · FOCUS Innovation Studio, San Francisco
3-hour build with judging, team formation; $25,000 prizes.
Check page$25,000 prizes- OpenPrizes listed
Maritime Dual-Use Hackathon
Mind the Bridge · Mind the Bridge, San Francisco
2-day build with judging, team formation; prizes listed.
OpenPrizes listedArm + ExecuTorch: Edge AI Challenge
arm · San Francisco State University, San Francisco
2-day build with a submission deadline.
Check pageMake Something Agents Want
YC · San Francisco
2-day build with judging, demos, team formation, a submission deadline; $3,000 cash.
Open$3,000 cashExecuTorch Hackathon
[SF] HackerSquad · Founders, Inc. | San Francisco Lab, San Francisco
2-day build with demos, team formation; prizes listed.
ApprovalPrizes listedUniversal Hackathon - Create Your Own AI Workforce | AWS Builder Loft
Medallion XLN Events · AWS Builder Loft, San Francisco
11-hour build with demos, team formation.
Check page- Check page
Universal Celebration Hackathon
BondHaus · AWS Builder Loft, San Francisco
11-hour build with demos, team formation.
OpenAI Startup Challenge Hackathon: The Pre-Event of SF AI Summit
Devnovate · San Francisco
10-hour build with judging, demos, team formation, a submission deadline; prizes listed.
ApprovalPrizes listedStartup Sprint: Prove you're fundable
Proving Ground · Palo Alto
3-day build with judging, team formation, a submission deadline; prizes listed.
ApprovalPrizes listedMulti-Model Hackathon @AWS Builders Loft
Beta University Events · San Francisco
9-hour build with judging, demos, team formation; prizes listed.
ApprovalPrizes listed- Check page
Personalized Medicine Builders: Demos, Discussion and Social
Research to the People Patient Hackathons · 81 Langton St, San Francisco
2-hour build with demos.
ApprovalKane CLI Hack Day, supported by OpenAI
Personal · Financial District, San Francisco
11-hour build with judging, demos, team formation, a submission deadline; $30,000+ prizes.
Open$30,000+ prizesLocal Align #3 — AI × GTM Growth Hackathon & Social
Local Align · Santa Clara
6-hour build with judging, demos, team formation.
OpenDell x NVIDIA Hackathon
Frontier Tower SF · Frontier Tower @ Spaceship 995 Market Street, San Francisco, SF
10-hour build.
Open- Open
The Builder Base: Buildathon
Devnovate · San Francisco
8-hour build with demos, team formation; prizes listed.
ApprovalPrizes listedNovember 2026
Company Brain Hackathon: Build an AI Agent That Knows Your Organization
TechEquity Ai - Silicon Valley · 135 Constitution Dr, Menlo Park
7-hour build with judging, demos, team formation.
OpenHackStorm 3.0: Sense, Think and Act
HackStorm · San Francisco, California, USA, San Francisco
3-day build with a submission deadline; $5,200 prizes.
Check page$5,200 prizes- Open
AI Tutor Hackathon
Beta University Events · Stanford
8-hour build with demos, team formation, a submission deadline; prizes listed.
ApprovalPrizes listed- Check page
- Open
Festiverse 2026: Diwali Hackathon
Events · Financial District, San Francisco
11-hour build with judging, demos, team formation, a submission deadline; prizes listed.
OpenPrizes listedHackwithBay 4.0
Devnovate · AWS Builder Loft, San Francisco
9-hour build with demos, team formation, a submission deadline; prizes listed.
ApprovalPrizes listedDecember 2026
Mango Hacks
krishay suresh · Zoho Corporation, Pleasanton
13-hour build with judging, a submission deadline.
ApprovalAgentic AI Hackathon 2.0 - SF
Devnovate · AWS Builder Loft, San Francisco
9-hour build with demos, team formation; prizes listed.
ApprovalPrizes listedODSC AI x NEBIUS | Hackathon
eventbrite.com · Hyatt Regency San Francisco Airport, Burlingame
24-hour build.
Check pageJanuary 2027
⚕️ SF HealthTech Week 2027 Passport! ⚕️(@ JPM)
⚕️SF HealthTech Week⚕️ Events · San Francisco
7-day build with demos.
Open⚕️ HealthTech Week ⚕️ Startup Pitch Competition (@JPM) in Partnership MedStartr
⚕️SF HealthTech Week⚕️ Events · The Foundry SF, San Francisco
3-hour build with judging, demos.
OpenDeveloperWeek 2027 Hackathon
DevNetwork · Santa Clara Convention Center + Online, Santa Clara
18-day build with a submission deadline; $5,000 prizes.
Check page$5,000 prizesDeveloperWeek 2027 Hackathon
eventbrite.com · Santa Clara Convention Center, Santa Clara
18-day build.
Check pageFebruary 2027
Check page