Online Web3 Hackathons
Participate from anywhere in the world. Browse online Web3 and blockchain hackathons, compete for prizes, and build innovative projects.
View all with full filters →Neeley AI Forward: AI Innovation Competition
Oct 16, 2026 - Oct 18, 2026
Prize Pool
Non-cash Prize
Meta VR Start Developer Competition 2026
Sep 24, 2026 - Nov 18, 2026
Prize Pool
$1.0M
Vortexa 3.0
Oct 9, 2026 - Oct 10, 2026
Prize Pool
Non-cash Prize
Hacktoberfest Hack Day Teens Delhi
Oct 16, 2026 - Oct 17, 2026
Prize Pool
Non-cash Prize
Tech For Her
Sep 24, 2026 - Sep 25, 2026
Prize Pool
$185
Kerfuffle at the FooBar
Sep 23, 2026 - Sep 24, 2026
Prize Pool
Non-cash Prize
YouCam API Skin AI & eCommerce VTO Hackathon
Sep 29, 2026 - Nov 2, 2026
Prize Pool
$6.0K
EthnoHACK
Nov 2, 2026 - Nov 8, 2026
Prize Pool
Non-cash Prize
DecentraHack 2.0
Sep 24, 2026 - Sep 30, 2026
Prize Pool
₹15.0K
RenderJuice Blender Animation & Programmatic Rendering Contest
Oct 14, 2026 - Oct 31, 2026
Prize Pool
$1.5K
hackUMBC 2026
Sep 26, 2026 - Sep 27, 2026
Prize Pool
Non-cash Prize
Blank Page
Oct 16, 2026 - Oct 17, 2026
Prize Pool
$1.0K
Meta Connect Web Apps Creator Hackathon
Sep 22, 2026 - Sep 23, 2026
Prize Pool
Non-cash Prize
Origin Weekend Fall 2026 (x Replit)
Sep 24, 2026 - Sep 28, 2026
Prize Pool
$5.0K
Carolina Data Challenge 2026
Sep 26, 2026 - Sep 27, 2026
Prize Pool
Non-cash Prize
Daytona HackSprint w/ Arize AI - NYC, October 2026
Oct 15, 2026 - Oct 16, 2026
Prize Pool
$6.5K
DivHacks 2026
Sep 26, 2026 - Sep 27, 2026
Prize Pool
Non-cash Prize
Build With AI: Basics
Sep 22, 2026 - Oct 26, 2026
Prize Pool
$2.5K
2026-2027 Fall ESE Senior Design
Sep 22, 2026 - Dec 7, 2026
Prize Pool
Non-cash Prize
Multimodal AI Hackathon 2026
Sep 30, 2026 - Oct 14, 2026
Prize Pool
₹100.0K