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 →Hack the Planet 2026
Feb 21, 2026 - Feb 26, 2026
Prize Pool
Non-cash Prize
Builders Day by HackUnion
Apr 3, 2026 - Apr 4, 2026
Prize Pool
Non-cash Prize
test2
Feb 25, 2026 - Feb 26, 2026
Prize Pool
Non-cash Prize
BUHack
Mar 5, 2026 - Mar 7, 2026
Prize Pool
Non-cash Prize
NeuroHack: Spring 2026
Mar 27, 2026 - Mar 29, 2026
Prize Pool
$550
BioHacks 2026
Feb 28, 2026 - Mar 1, 2026
Prize Pool
Non-cash Prize
SUPER SECRET DEMO HACKATHON
Feb 24, 2026 - Mar 1, 2026
Prize Pool
$1
Frostbyte Hackathon
Jan 26, 2026 - Mar 14, 2026
Prize Pool
$5.2K
Status: EndedTether Hackathon Galactica: WDK Edition 1
Feb 25, 2026 - Mar 22, 2026
Prize Pool
$30.0K
Sudarshan
Mar 22, 2026 - Mar 30, 2026
Prize Pool
$5.4K
BioHack 2026
Mar 13, 2026 - Mar 14, 2026
Prize Pool
$67
Fuel the Future
Mar 7, 2026 - Mar 9, 2026
Prize Pool
$400
HACK THE FUTURE OF STELLA
Jan 30, 2026 - Mar 13, 2026
Prize Pool
$80.0K
United Hacks V7
Jul 10, 2026 - Jul 12, 2026
Prize Pool
$1.4K
Interventions: Entangle Designathon
Mar 20, 2026 - Mar 22, 2026
Prize Pool
Non-cash Prize
HackHPI 2026
Apr 10, 2026 - Apr 11, 2026
Prize Pool
€3.0K
DemoHackathon
Feb 23, 2026 - Feb 24, 2026
Prize Pool
Non-cash Prize
Status: EndedMAHa- Telegram Mini App Hackathon
Jun 4, 2024 - Jul 2, 2024
Prize Pool
$22.0K
Status: EndedAvalanche "Many Chains, United as One" Hack House
Jul 10, 2024 - Jul 11, 2024
Prize Pool
$4.0K
Status: EndedXION BELIEVATHON
Nov 21, 2024 - Jan 18, 2025
Prize Pool
$40.0K