Upcoming hackathons in October 2026
Every hackathon with a deadline in October 2026, read live from the platforms they run on. Free to browse, no account needed.
28 open now · 644 across the whole index · refreshed 12 Aug 2026
HACKATHON · Devfolio50 DAYS LEFT
HACKER HOUSE GOA 2026
See listingGoa, IndiaFree entryCloses 1 Oct 2026Details +Close −- Registration closes
- 1 Oct 2026, 00:00 IST
- Prize
- See listing
- Mode and place
- OFFLINE · Goa, India
- Entry fee
- Free
- Team size
- 1 to 3
- Who can enter
- See listing
HACKATHON · Devpost50 DAYS LEFT
Beginner's Paradise - FirstCommit
elipsedayOnlineFree entryCloses 1 Oct 2026Details +Close −- Registration closes
- 1 Oct 2026, 05:29 IST
- Prize
- See listing
- Mode and place
- Online
- Entry fee
- Free
- Team size
- See listing
- Who can enter
- Beginner Friendly, Mobile, Web
HACKATHON · Devpost51 DAYS LEFT
OneAquaHealth IEEE Global Hackathon
OneAquaHealthOnlineFree entry$3,000Closes 2 Oct 2026Details +Close −- Registration closes
- 2 Oct 2026, 05:29 IST
- Prize
- $3,000
- Mode and place
- Online
- Entry fee
- Free
- Team size
- See listing
- Who can enter
- Health, Machine Learning/AI, Social Good
HACKATHON · Devpost51 DAYS LEFT
AWS Trainium Frontier Competition
Amazon Web ServicesOnlineFree entry$40,000Closes 2 Oct 2026Details +Close −- Registration closes
- 2 Oct 2026, 05:29 IST
- Prize
- $40,000
- Mode and place
- Online
- Entry fee
- Free
- Team size
- See listing
- Who can enter
- Machine Learning/AI
HACKATHON · Devpost52 DAYS LEFT
GatewayHacks 2026 | Software & AI
GatewayGSOnlineFree entry$11,685Closes 3 Oct 2026Details +Close −- Registration closes
- 3 Oct 2026, 05:29 IST
- Prize
- $11,685
- Mode and place
- Online
- Entry fee
- Free
- Team size
- See listing
- Who can enter
- Beginner Friendly, Machine Learning/AI, Open Ended
HACKATHON · Devpost54 DAYS LEFT
Dublin Hacx
Emerald High SchoolSAP Office — San Ramon, CAFree entry$2,250Closes 5 Oct 2026Details +Close −- Registration closes
- 5 Oct 2026, 05:29 IST
- Prize
- $2,250
- Mode and place
- OFFLINE · SAP Office — San Ramon, CA
- Entry fee
- Free
- Team size
- See listing
- Who can enter
- Open Ended, Beginner Friendly, Machine Learning/AI
HACKATHON · Devpost54 DAYS LEFT
codeLinc 11 with Lincoln Financial & AWS
Lincoln Financial GroupLincoln Financial Group - Greensboro, NCFree entry$10,000Closes 5 Oct 2026Details +Close −- Registration closes
- 5 Oct 2026, 05:29 IST
- Prize
- $10,000
- Mode and place
- OFFLINE · Lincoln Financial Group - Greensboro, NC
- Entry fee
- Free
- Team size
- See listing
- Who can enter
- Enterprise, Fintech, Machine Learning/AI
HACKATHON · Devpost56 DAYS LEFT
UnivaBio ($5k+ in prizes!)
BioCataalysisOnlineFree entry$5,420Closes 7 Oct 2026Details +Close −- Registration closes
- 7 Oct 2026, 05:29 IST
- Prize
- $5,420
- Mode and place
- Online
- Entry fee
- Free
- Team size
- See listing
- Who can enter
- Beginner Friendly, Health, Social Good
HACKATHON · Devpost58 DAYS LEFT
HTCJ Aviation Futures Innovation Challenge
hacktheconcretejungleSan Diego Convention Center Free entryCloses 9 Oct 2026Details +Close −- Registration closes
- 9 Oct 2026, 05:29 IST
- Prize
- See listing
- Mode and place
- OFFLINE · San Diego Convention Center
- Entry fee
- Free
- Team size
- See listing
- Who can enter
- Enterprise, Machine Learning/AI, Social Good
HACKATHON · Devpost58 DAYS LEFT
Hack Away Hunger: Food Insecurity Challenge
dsmhackCorteva's Pioneer Shull BuildingFree entry$5,000Closes 9 Oct 2026Details +Close −- Registration closes
- 9 Oct 2026, 05:29 IST
- Prize
- $5,000
- Mode and place
- OFFLINE · Corteva's Pioneer Shull Building
- Entry fee
- Free
- Team size
- See listing
- Who can enter
- Open Ended, Social Good
HACKATHON · Hack Club58 DAYS LEFT
Banana Hacks
Hack Club networkOnlineFree entryCloses 9 Oct 2026Details +Close −- Registration closes
- 9 Oct 2026, 05:30 IST
- Prize
- See listing
- Mode and place
- Online
- Entry fee
- Free
- Team size
- See listing
- Who can enter
- School and college students
HACKATHON · Devpost59 DAYS LEFT
Prompt2Product: MLH Hack Day @ AITR
Acropolis Institute of Technology and RCAITR IndoreFree entryCloses 10 Oct 2026Details +Close −- Registration closes
- 10 Oct 2026, 05:29 IST
- Prize
- See listing
- Mode and place
- OFFLINE · AITR Indore
- Entry fee
- Free
- Team size
- See listing
- Who can enter
- DevOps, Education
HACKATHON · Hack Club59 DAYS LEFT
Hyphen-Hacks
Hack Club networkSan FranciscoFree entryCloses 10 Oct 2026Details +Close −- Registration closes
- 10 Oct 2026, 14:30 IST
- Prize
- See listing
- Mode and place
- OFFLINE · San Francisco
- Entry fee
- Free
- Team size
- See listing
- Who can enter
- School and college students
HACKATHON · Devpost60 DAYS LEFT
ForgeHacks Online 2026
ForgeHacksOnlineFree entryCloses 11 Oct 2026Details +Close −- Registration closes
- 11 Oct 2026, 05:29 IST
- Prize
- See listing
- Mode and place
- Online
- Entry fee
- Free
- Team size
- See listing
- Who can enter
- Beginner Friendly, Lifehacks, Machine Learning/AI
HACKATHON · Devpost61 DAYS LEFT
Palmetto Hacks
Kappa Theta Pi South CarolinaUSC College of Engineering and ComputingFree entryCloses 12 Oct 2026Details +Close −- Registration closes
- 12 Oct 2026, 05:29 IST
- Prize
- See listing
- Mode and place
- OFFLINE · USC College of Engineering and Computing
- Entry fee
- Free
- Team size
- See listing
- Who can enter
- Beginner Friendly, Enterprise, Machine Learning/AI
HACKATHON · Devpost61 DAYS LEFT
Knight Hacks IX
Knight HacksUCF Engineering II (ENG2)Free entryCloses 12 Oct 2026Details +Close −- Registration closes
- 12 Oct 2026, 05:29 IST
- Prize
- See listing
- Mode and place
- OFFLINE · UCF Engineering II (ENG2)
- Entry fee
- Free
- Team size
- See listing
- Who can enter
- Beginner Friendly
HACKATHON · Devpost61 DAYS LEFT
RecT Solutions Hackathon: Beyond the CV 2026
RecT SolutionsIDEA Spaces SaldanhaFree entry€2,000Closes 12 Oct 2026Details +Close −- Registration closes
- 12 Oct 2026, 05:29 IST
- Prize
- €2,000
- Mode and place
- OFFLINE · IDEA Spaces Saldanha
- Entry fee
- Free
- Team size
- See listing
- Who can enter
- Databases, DevOps, Machine Learning/AI
HACKATHON · Devpost61 DAYS LEFT
Hacklanta
progsuStudent Center East Ballroom GSUFree entry$20,000Closes 12 Oct 2026Details +Close −- Registration closes
- 12 Oct 2026, 05:29 IST
- Prize
- $20,000
- Mode and place
- OFFLINE · Student Center East Ballroom GSU
- Entry fee
- Free
- Team size
- See listing
- Who can enter
- Beginner Friendly, Machine Learning/AI, Open Ended
HACKATHON · Devpost62 DAYS LEFT
United Hackathons V1
DevonomicsOnlineFree entryCloses 13 Oct 2026Details +Close −- Registration closes
- 13 Oct 2026, 05:29 IST
- Prize
- See listing
- Mode and place
- Online
- Entry fee
- Free
- Team size
- See listing
- Who can enter
- Machine Learning/AI, Open Ended, Social Good
HACKATHON · Devfolio64 DAYS LEFT
Hack On Hills 8.0
See listingHamirpurFree entryCloses 15 Oct 2026Details +Close −- Registration closes
- 15 Oct 2026, 23:59 IST
- Prize
- See listing
- Mode and place
- OFFLINE · Hamirpur
- Entry fee
- Free
- Team size
- 2 to 4
- Who can enter
- See listing
HACKATHON · Internshala64 DAYS LEFT
AI for Good Hackathon 2026
Listed on InternshalaOnlineSee listingCloses 15 Oct 2026Details +Close −- Registration closes
- 15 Oct 2026, 23:59 IST
- Prize
- See listing
- Mode and place
- Online
- Entry fee
- See listing
- Team size
- See listing
- Who can enter
- Students
HACKATHON · Devpost67 DAYS LEFT
Build-A-Thon
Major League HackingNCC Digital Park, University of IbadanFree entryCloses 18 Oct 2026Details +Close −- Registration closes
- 18 Oct 2026, 05:29 IST
- Prize
- See listing
- Mode and place
- OFFLINE · NCC Digital Park, University of Ibadan
- Entry fee
- Free
- Team size
- See listing
- Who can enter
- E-commerce/Retail, Health, Low/No Code
HACKATHON · Devpost68 DAYS LEFT
WWU Social Justice Hackathon
Western Washington UniversityWWU - Kaiser Borsari BuildingFree entryCloses 19 Oct 2026Details +Close −- Registration closes
- 19 Oct 2026, 05:29 IST
- Prize
- See listing
- Mode and place
- OFFLINE · WWU - Kaiser Borsari Building
- Entry fee
- Free
- Team size
- See listing
- Who can enter
- Social Good
HACKATHON · Devpost68 DAYS LEFT
AI Hackathon 2026 by LA Hacks
LA HacksJames West Alumni CenterFree entryCloses 19 Oct 2026Details +Close −- Registration closes
- 19 Oct 2026, 05:29 IST
- Prize
- See listing
- Mode and place
- OFFLINE · James West Alumni Center
- Entry fee
- Free
- Team size
- See listing
- Who can enter
- Machine Learning/AI
HACKATHON · Devpost75 DAYS LEFT
DSH Hacks V2
STEMiseOnlineFree entryCloses 26 Oct 2026Details +Close −- Registration closes
- 26 Oct 2026, 05:29 IST
- Prize
- See listing
- Mode and place
- Online
- Entry fee
- Free
- Team size
- See listing
- Who can enter
- Beginner Friendly, Low/No Code, Open Ended
HACKATHON · Devpost75 DAYS LEFT
IEEE ClimateChain Global Hackathon
IEEE TurkeyOnlineFree entry$3,000Closes 26 Oct 2026Details +Close −- Registration closes
- 26 Oct 2026, 05:29 IST
- Prize
- $3,000
- Mode and place
- Online
- Entry fee
- Free
- Team size
- See listing
- Who can enter
- Blockchain, Machine Learning/AI, Social Good
HACKATHON · Devpost75 DAYS LEFT
HackPSU Fall 2026
HackPSUECoRE BuildingFree entry$1,500Closes 26 Oct 2026Details +Close −- Registration closes
- 26 Oct 2026, 05:29 IST
- Prize
- $1,500
- Mode and place
- OFFLINE · ECoRE Building
- Entry fee
- Free
- Team size
- See listing
- Who can enter
- Beginner Friendly, Education, Open Ended
HACKATHON · Devfolio78 DAYS LEFT
TUM Blockchain & AI Hackathon
See listingMünchenFree entryCloses 29 Oct 2026Details +Close −- Registration closes
- 29 Oct 2026, 17:30 IST
- Prize
- See listing
- Mode and place
- OFFLINE · München
- Entry fee
- Free
- Team size
- 1 to 5
- Who can enter
- See listing
Want to filter this further, by date or platform or free entry? The full index has every listing with filters on top.
Get the deadlines in your calendar and stop checking.
This page is a slice of a bigger list, and the calendars follow the bigger lists. Pick the one that covers you and every deadline arrives with a day's warning.