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 →HackMars 3.0: NEON
May 16, 2026 - Jun 9, 2026
Prize Pool
Non-cash Prize
Code Crush 2026
May 23, 2026 - May 24, 2026
Prize Pool
Non-cash Prize
SuHack 2026: NeuroBridge AI Hackathon
May 1, 2026 - May 2, 2026
Prize Pool
$600
Real World AI Agents
May 7, 2026 - May 9, 2026
Prize Pool
$15.0K
Build with AI 2026 x MLH Hackathon in Ahlen
May 22, 2026 - May 23, 2026
Prize Pool
Non-cash Prize
strAIght up! Hackathon
Apr 24, 2026 - Apr 25, 2026
Prize Pool
$26.0K
VibeFlow x LovHack Hackathon
Apr 25, 2026 - Apr 27, 2026
Prize Pool
Non-cash Prize
Synthesis Hacks
Apr 18, 2026 - Apr 19, 2026
Prize Pool
$500
KiroHacks Cal Poly
May 2, 2026 - May 3, 2026
Prize Pool
$5.3K
SoCal Claude Builder Club Hackathon
Apr 18, 2026 - Apr 19, 2026
Prize Pool
$1.5K
Frontera Hacks
Apr 18, 2026 - Apr 19, 2026
Prize Pool
$255
QueerCoded
Apr 18, 2026 - Apr 19, 2026
Prize Pool
Non-cash Prize
Code I/0
Apr 18, 2026 - Apr 19, 2026
Prize Pool
Non-cash Prize
ACM Education MP S26
Apr 16, 2026 - Apr 27, 2026
Prize Pool
Non-cash Prize
day zero
Apr 16, 2026 - Apr 26, 2026
Prize Pool
Non-cash Prize
BNFOthon 2026
Apr 18, 2026 - Apr 19, 2026
Prize Pool
Non-cash Prize
Stellaris
Apr 15, 2026 - Apr 19, 2026
Prize Pool
$535
DawsHacks 2026
Apr 12, 2026 - May 2, 2026
Prize Pool
$1.0K
Designer's Edge
Apr 18, 2026 - Apr 19, 2026
Prize Pool
Non-cash Prize
GLITCHED GAMES
Apr 16, 2026 - Jun 30, 2026
Prize Pool
Non-cash Prize