Hackathons in September 2026
These are the hackathons with registration or the build phase happening in September 2026. Deadlines are listed in Indian time; register early, as some hackathons close when they are full.
Hackathons with a registration deadline in September 2026 come first. For everything coming up later, see all upcoming hackathons.
Open and upcoming
Nothing is open here right now. New hackathons are added every week.
Frequently asked questions
Which hackathons are open in September 2026?
This page lists every hackathon on Hack4Hack whose registration or submission window falls in September 2026, updated automatically as organizers publish new ones.
Do I have to pay to register on Hack4Hack?
No. A Hack4Hack account is free, and most hackathons are free to enter. When an organizer charges a fee, it is shown on the hackathon page before you register.