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 →Carolina Quantum Hacks 2026
Apr 18, 2026 - Apr 19, 2026
Prize Pool
Non-cash Prize
RoyalHacks
Apr 18, 2026 - Apr 19, 2026
Prize Pool
Non-cash Prize
Your idea vs 1,000 other marketers. Let’s see where you actually stand.
Apr 15, 2026 - Jun 14, 2026
Prize Pool
₹10.0K
FullyHacks 2026
Apr 18, 2026 - Apr 19, 2026
Prize Pool
$1.0K
The Phia Hack
Apr 18, 2026 - Apr 19, 2026
Prize Pool
$7.5K
Critical Ops: A DC National Security Hackathon
Apr 17, 2026 - Apr 19, 2026
Prize Pool
Non-cash Prize
Hacknarok
Apr 18, 2026 - Apr 19, 2026
Prize Pool
Non-cash Prize
UCI AWS Cloud Hacks - 2026
Apr 18, 2026 - Apr 19, 2026
Prize Pool
Non-cash Prize
VikingsHacks 25-26
Apr 13, 2026 - Apr 25, 2026
Prize Pool
Non-cash Prize
CU Design-a-thon 2026
Apr 16, 2026 - Apr 19, 2026
Prize Pool
Non-cash Prize
George Hacks x United Nations "Reboot the Earth" Hackathon
Apr 18, 2026 - Apr 19, 2026
Prize Pool
$4.4K
Girls in STEM: AI for Social Good Hackathon
Apr 12, 2026 - May 14, 2026
Prize Pool
Non-cash Prize
FusionHack 2026
Apr 16, 2026 - Apr 21, 2026
Prize Pool
Non-cash Prize
StarkHacks Original
Apr 18, 2026 - Apr 19, 2026
Prize Pool
Non-cash Prize
DataHacks 2026
Apr 18, 2026 - Apr 19, 2026
Prize Pool
$29.8K
HackPrinceton Spring '26
Apr 17, 2026 - Apr 19, 2026
Prize Pool
$2.0K
BluePrint 2026 - Hackthon for freshers and Students
Apr 13, 2026 - May 14, 2026
Prize Pool
₹18.0K
AI Hackfest
Apr 17, 2026 - Apr 19, 2026
Prize Pool
Non-cash Prize
Build for Impact — CBC Hackathon @ UR-CST
Apr 14, 2026 - Apr 20, 2026
Prize Pool
$1.5K
COMM STEM X SUDATA HACKATHON
Apr 18, 2026 - Apr 19, 2026
Prize Pool
$1.3K