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 →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
ForgeHacks Online 2026
Oct 3, 2026 - Oct 10, 2026
Prize Pool
$313.1K
IEEE ClimateChain Global Hackathon
Oct 5, 2026 - Oct 25, 2026
Prize Pool
$3.0K
Bharat Innovation Challenge 2.0
Sep 18, 2026 - Sep 22, 2026
Prize Pool
₹10.6K
HackIT 2026
Sep 14, 2026 - Oct 20, 2026
Prize Pool
Non-cash Prize
Hack Days Turbhe
Sep 20, 2026 - Sep 29, 2026
Prize Pool
Non-cash Prize
SVYCA Youth for Earth (Y4E) Hackathon
Sep 20, 2026 - Oct 18, 2026
Prize Pool
$2.7K
305 HackShells Edition September 2026
Sep 15, 2026 - Sep 30, 2026
Prize Pool
Non-cash Prize
Creator Colosseum: The Startup Showdown
Sep 20, 2026 - Oct 10, 2026
Prize Pool
$29.9K
HACK47: OFFGRID
Sep 15, 2026 - Oct 15, 2026
Prize Pool
Non-cash Prize
Next Byte Hacks: V4
Sep 5, 2026 - Sep 30, 2026
Prize Pool
$100
CAST-GNY Startup Pitch Competition 2026
Sep 1, 2026 - Sep 22, 2026
Prize Pool
Non-cash Prize
Hyperbloom September - Beginer Freindly
Sep 14, 2026 - Sep 23, 2026
Prize Pool
Non-cash Prize
InnovArt 2027: Art and Technology Hack Day
Aug 23, 2026 - Jan 2, 2027
Prize Pool
Non-cash Prize
Hack Away Hunger: Food Insecurity Challenge
Jul 18, 2026 - Oct 8, 2026
Prize Pool
$5.0K
CityCamp Gainesville Hack Day
Sep 20, 2026 - Sep 23, 2026
Prize Pool
$900
Acodemic X G.I.R.L.S. Global SDG Hackathon
Sep 19, 2026 - Sep 27, 2026
Prize Pool
$35
Practice to Create [Feedback To All Projects!]
Sep 3, 2026 - Sep 25, 2026
Prize Pool
Non-cash Prize