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 →Obserc Safety Hackathon
Mar 27, 2026 - Apr 11, 2026
Prize Pool
Non-cash Prize
Predict4Good Hackathon
Mar 28, 2026 - Apr 10, 2026
Prize Pool
Non-cash Prize
Ponderosa Hacks
Mar 27, 2026 - Mar 28, 2026
Prize Pool
Non-cash Prize
Code Fest
Apr 27, 2026 - Apr 28, 2026
Prize Pool
Non-cash Prize
OpenClaw Hackathon Vienna
Mar 27, 2026 - Mar 28, 2026
Prize Pool
Non-cash Prize
Multimodal Frontier Hackathon
Mar 27, 2026 - Mar 28, 2026
Prize Pool
$7.7K
Stupid Ideas Hackathon (Toronto W26)
Mar 27, 2026 - Mar 28, 2026
Prize Pool
Non-cash Prize
HackFest 2026
Mar 24, 2026 - Mar 25, 2026
Prize Pool
Non-cash Prize
High Stakes Gamathon
Apr 1, 2026 - Apr 2, 2026
Prize Pool
Non-cash Prize
Rutgers IEEE X RU HART Build-a-thon
Apr 18, 2026 - Apr 19, 2026
Prize Pool
Non-cash Prize
Stupid Ideas Hackathon (Waterloo W26)
Mar 28, 2026 - Mar 29, 2026
Prize Pool
Non-cash Prize
Deep Agents Hackathon
Mar 26, 2026 - Mar 27, 2026
Prize Pool
$9.3K
DEMOKHE
Mar 24, 2026 - Mar 24, 2030
Prize Pool
Non-cash Prize
Claude Hackathon at Imperial College London | Claude Builder Club @ Imperial
Mar 23, 2026 - Mar 24, 2026
Prize Pool
Non-cash Prize
AthenaHacks 2026
Mar 24, 2026 - Mar 29, 2026
Prize Pool
Non-cash Prize
JagHacks 2026
Mar 27, 2026 - Mar 28, 2026
Prize Pool
Non-cash Prize
FemmeHacks 2026
Mar 27, 2026 - Mar 28, 2026
Prize Pool
Non-cash Prize
Hackiethon 2026
Mar 27, 2026 - Mar 30, 2026
Prize Pool
$700
PiHacks Enhanced
Apr 1, 2026 - May 1, 2026
Prize Pool
$201
PiHacks
Apr 1, 2026 - May 1, 2026
Prize Pool
$199