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 →ImpactHack 2026
Oct 1, 2026 - Oct 8, 2026
Prize Pool
Non-cash Prize
HackFW: MADE Challenge
Oct 1, 2026 - Oct 30, 2026
Prize Pool
$1.9K
Planet Resilience: Innovation for Sustainable Impact Hackathon
Sep 28, 2026 - Oct 1, 2026
Prize Pool
$1.7K
Gator Hack V - AI Days 2026
Oct 23, 2026 - Oct 25, 2026
Prize Pool
$3.5K
Neighborhood Hacks
Oct 16, 2026 - Oct 24, 2026
Prize Pool
$9.7K
Dublin Hacx
Oct 3, 2026 - Oct 4, 2026
Prize Pool
$2.3K
Cosmo Hacks
Dec 18, 2026 - Dec 21, 2026
Prize Pool
$126.7K
Hack The City 2026
Sep 21, 2026 - Sep 25, 2026
Prize Pool
€6.0K
Nerdearla Vibeathon 2026
Sep 24, 2026 - Sep 25, 2026
Prize Pool
Non-cash Prize
WarriorHacks 2.0
Sep 28, 2026 - Oct 13, 2026
Prize Pool
$20.9K
Lake Oswego Hacks
Sep 26, 2026 - Sep 27, 2026
Prize Pool
$260
Banana Hacks
Oct 9, 2026 - Oct 12, 2026
Prize Pool
$500
LarpHacks
Oct 24, 2026 - Oct 25, 2026
Prize Pool
$21.4K
HackWashU Fall AI Build Challenge
Sep 25, 2026 - Sep 27, 2026
Prize Pool
Non-cash Prize
Zoftware Hireathon
Oct 2, 2026 - Oct 3, 2026
Prize Pool
$500
hackPHS 2026
Oct 10, 2026 - Oct 11, 2026
Prize Pool
$1.0K
EurekaDev 2026
Sep 27, 2026 - Oct 20, 2026
Prize Pool
$4.3K
United Hacks V8
Jan 8, 2027 - Jan 10, 2027
Prize Pool
$700
Hack Apertus
Oct 1, 2026 - Oct 16, 2026
Prize Pool
€8.0K
Arbiter Hacks V1
Oct 20, 2026 - Dec 21, 2026
Prize Pool
$3.8K