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 →HackSMC Spring 2026
May 9, 2026 - May 10, 2026
Prize Pool
Non-cash Prize
Build with MeDo Hackathon
Apr 9, 2026 - May 20, 2026
Prize Pool
$50.0K
Lyzr Agentathon
Apr 24, 2026 - Apr 25, 2026
Prize Pool
₹200.0K
LUMA Hackathon: Pitch your idea, win up to $500
May 2, 2026 - May 16, 2026
Prize Pool
$250
MariHacks IX
Apr 17, 2026 - Apr 18, 2026
Prize Pool
Non-cash Prize
Hackathon for Social Good 2026 - CPH
Apr 11, 2026 - Apr 12, 2026
Prize Pool
Non-cash Prize
305 HackShells Edition April 2026
Apr 10, 2026 - Apr 24, 2026
Prize Pool
Non-cash Prize
CSBA x HBA Hack Day
Apr 11, 2026 - Apr 12, 2026
Prize Pool
$999
LEAD BUILS
Apr 7, 2026 - Apr 8, 2026
Prize Pool
Non-cash Prize
EPOCH '26
Apr 8, 2026 - Apr 25, 2026
Prize Pool
₹300.0K
Infinity Hackday
Apr 7, 2026 - Apr 8, 2026
Prize Pool
Non-cash Prize
Winter 2026 MAIS 202 Bootcamp
Apr 7, 2026 - Apr 8, 2026
Prize Pool
Non-cash Prize
Status: EndedNBA Playoffs Prediction Market Hackathon
May 4, 2026 - Jun 1, 2026
Prize Pool
$1.0K
2026 MakeNJIT Hardware hackathon
Apr 11, 2026 - Apr 12, 2026
Prize Pool
$3.0K
LakerHacks 2026
Apr 18, 2026 - Apr 19, 2026
Prize Pool
Non-cash Prize
VIBECON
Apr 15, 2026 - Apr 17, 2026
Prize Pool
$10.0K
Massachusetts Space Week 2026 Space Medicine Hackathon
Apr 7, 2026 - Apr 17, 2026
Prize Pool
$500
Vibe Coding Hackathon
Apr 11, 2026 - Apr 12, 2026
Prize Pool
Non-cash Prize
ML Empowerment Build Challenge
Apr 7, 2026 - May 13, 2026
Prize Pool
Non-cash Prize
Data Snax Datathon in St. Louis
Apr 17, 2026 - Apr 18, 2026
Prize Pool
$375