Explore UI Hackathons 2026

Craft beautiful, intuitive user interfaces at UI hackathons focused on layout, interaction, and polish.
Explore Ui hackathons online and in-person
IN-PERSON StarkHacks

April 17, 2026 - April 19, 2026

Ended

Build the future of hardware at the world’s largest hardware hackathon - 36 hours of the brightest sparks coming to life.

IN-PERSON StarkHacks

April 17, 2026 - April 19, 2026

Ended

StarkHacks is the world's largest hardware hackathon hosted at Purdue University from April 17–19, bringing together 500+ of the most brilliant minds from all over …

IN-PERSON Hack Brooklyn

April 17, 2026 - April 19, 2026

Ended

About the challenge Hack Brooklyn is Brooklyn College's premier hackathon with the aim to empower students in technology. Join us for 48 hours to build …

IN-PERSON Codorra

April 17, 2026 - April 27, 2026

Ended

About the challenge CODORRA is a two-phase cybersecurity hackathon where teams of 3-5 participants build practical security-related products. Round 1 (Online Submissions): April 17 - …

ONLINE HackAmerica

April 11, 2026 - April 18, 2026

Ended

About the challenge Next spring, HackAmerica is encouraging high school students nationwide to participate in one of the largest student-led hackathons in the United States. …

IN-PERSON Google Build with AI Hackathon

April 11, 2026 - April 12, 2026

Ended

WashU's Build with AI Hackathon is WashU's premier in-person hackathon for undergraduate students in the Midwest to tackle the most challenging problems in AI and …

IN-PERSON Hack Cupertino 2026

April 11, 2026 - April 12, 2026

Ended

The Cupertino's Youth Activity Board together with the Cupertino Recreation Department is hosting <hack> Cupertino, a 13-hour overnight hackathon designed to solve a (secret) problem …

IN-PERSON Big Red Hacks 2026

April 11, 2026

Date TBD

About the challenge This hackathon challenges participants to leverage AI technology to enrich and equitize K-12 student education by creating innovative tools or plans that …

IN-PERSON HackHexa

April 9, 2026

Date TBD

Get started HackHexa is a hands-on learning experience designed to introduce high school girls to the world of technology and engineering in an accessible, creative, …

ONLINE Build with MeDo Hackathon

April 9, 2026 - May 20, 2026

Ended

Build with MeDo Hackathon Prizes: $50,000+ Submission period: April 9 – May 20 Rules & Homepage Here: https://medo.devpost.com Build creative applications with MeDo, no coding …

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