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 →ECU Spark
Mar 19, 2026 - Mar 20, 2026
Prize Pool
Non-cash Prize
Hack4Her 2026
Jun 6, 2026 - Jun 7, 2026
Prize Pool
Non-cash Prize
MindHack 2026
Mar 20, 2026 - Mar 22, 2026
Prize Pool
$800
BioHackathon Edinburgh 2026
Mar 20, 2026 - Mar 22, 2026
Prize Pool
Non-cash Prize
OAHL Hardware Hack: Build the Agent-to-Hardware Interface Layer
Mar 19, 2026 - Apr 30, 2026
Prize Pool
Non-cash Prize
NextGen Product Lab
Mar 18, 2026 - Mar 25, 2026
Prize Pool
$3.5K
MidNight Hackers
Mar 18, 2026 - Mar 25, 2026
Prize Pool
$5.3K
DevNetwork [API + Cloud + AI] Hackathon 2026
Aug 17, 2026 - Sep 3, 2026
Prize Pool
Non-cash Prize
Hack Days in Bhopal 2.0
Apr 18, 2026 - Apr 19, 2026
Prize Pool
Non-cash Prize
Dev Annual Hackathon
Mar 18, 2026 - Mar 23, 2026
Prize Pool
$4.5K
ProduHacks 2026
Mar 21, 2026 - Mar 22, 2026
Prize Pool
$3.1K
Pixel Forge Jam 2026
Apr 7, 2026 - Apr 14, 2026
Prize Pool
Non-cash Prize
RidgeHacks 2026
Apr 24, 2026 - Apr 25, 2026
Prize Pool
$2.0K
JacHacks
Apr 4, 2026 - Apr 5, 2026
Prize Pool
Non-cash Prize
ITIZ CHALLENGE
Apr 27, 2026 - Apr 28, 2026
Prize Pool
Non-cash Prize
Status: EndedGenLayer Testnet Bradbury
Mar 20, 2026 - Apr 4, 2026
Prize Pool
Non-cash Prize
Hack Like W@CC 2026
Apr 3, 2026 - Apr 4, 2026
Prize Pool
Non-cash Prize
DSH Hacks V1
Mar 2, 2026 - Jun 2, 2026
Prize Pool
Non-cash Prize
Preventing Inaccurate Fills: Liquid Filling System Calibration
Mar 17, 2026 - Mar 18, 2026
Prize Pool
$10.0K
Boeing presents TruHacks 2026
Mar 20, 2026 - Mar 22, 2026
Prize Pool
Non-cash Prize