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 →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
Grizzhacks 8
Mar 28, 2026 - Mar 29, 2026
Prize Pool
Non-cash Prize
Quantum Ready College Projects -Winter2026
Mar 26, 2026 - Mar 28, 2026
Prize Pool
Non-cash Prize
SCESoc x Ciena Coding Competition
Mar 25, 2026 - Mar 26, 2026
Prize Pool
Non-cash Prize
49er Foundry: 49-MINUTE PITCH COMPETITION- R1
Mar 25, 2026 - Mar 26, 2026
Prize Pool
Non-cash Prize
BLOCKCHAIN HACK KRAKOW
Mar 28, 2026 - Mar 29, 2026
Prize Pool
$9.0K
SystemHacks
Mar 23, 2026 - Apr 25, 2026
Prize Pool
Non-cash Prize
Smart Desktop Setup & AI Creation Challenge
Mar 23, 2026 - May 6, 2026
Prize Pool
$1.9K
BlairHacks 8
May 23, 2026 - May 25, 2026
Prize Pool
Non-cash Prize
RaptorHacks
Mar 21, 2026 - Mar 22, 2026
Prize Pool
Non-cash Prize