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 →Cheesehacks
Feb 28, 2026 - Mar 1, 2026
Prize Pool
$1.5K
Byte. Hack Days
Feb 27, 2026 - Feb 28, 2026
Prize Pool
Non-cash Prize
DemonHacks
Feb 28, 2026 - Mar 1, 2026
Prize Pool
Non-cash Prize
btc/acc
Feb 6, 2026 - Mar 1, 2026
Prize Pool
Non-cash Prize
Hack'Her'Thon'26
Mar 12, 2026 - Mar 13, 2026
Prize Pool
₹50.0K
Code Quest
Feb 27, 2026 - Feb 28, 2026
Prize Pool
$450
Mountain Madness 2026
Feb 28, 2026 - Mar 1, 2026
Prize Pool
Non-cash Prize
Hack to the Future - Presented by AISC @ UW
Feb 28, 2026 - Mar 1, 2026
Prize Pool
$1.9K
TechVision UXHack
Feb 28, 2026 - Mar 1, 2026
Prize Pool
Non-cash Prize
Mountain Madness 2026
Feb 28, 2026 - Mar 1, 2026
Prize Pool
Non-cash Prize
Status: Ending SoonAWS Activate Program for Web3 Startups
Feb 27, 2026 - Jul 1, 2026
Prize Pool
Non-cash Prize
Hack The Net
Mar 14, 2026 - Mar 22, 2026
Prize Pool
$100
WayneHacks 4
Apr 11, 2026 - Apr 12, 2026
Prize Pool
Non-cash Prize
HackBelfast
Apr 11, 2026 - Apr 12, 2026
Prize Pool
€3.0K
University of Washington Databricks Hackathon
Feb 27, 2026 - Feb 28, 2026
Prize Pool
Non-cash Prize
Tech(Hack)
Mar 6, 2026 - Mar 8, 2026
Prize Pool
Non-cash Prize
MCA 2026 projects
Feb 27, 2026 - Dec 25, 2026
Prize Pool
Non-cash Prize
Hack Days with CAP & TecBytes
Feb 27, 2026 - Feb 28, 2026
Prize Pool
Non-cash Prize
Hack Days In Lome Build In Public
Feb 27, 2026 - Feb 28, 2026
Prize Pool
Non-cash Prize
Code-A-Site
Apr 10, 2026 - Apr 11, 2026
Prize Pool
Non-cash Prize