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
ONLINE 305 Hack Spr26 | SubmissionPortal | [email protected]

March 20, 2026 - March 22, 2026

Ended

๐Ÿ” ๐Ÿ” 305 Hack Spring 2026 | Devpost Submission Portal ONLYRegister at 305hackspring2026.vercel.app Announcing 305 Hack: Spring 2026 EditionHosted by CODE CRUNCH, ColorStack at FIU, โ€ฆ

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beginner ยท iot ยท social ยท Online
IN-PERSON LotusHacks x HackHarvard x GenAI Fund Vietnam Hackathon

March 20, 2026 - March 22, 2026

Ended

LotusHacks is the largest 36-hour hackathon in Vietnam. Weโ€™re bringing together 800+ builders, creators, and hackers to Ho Chi Minh City to build bold ideas. โ€ฆ

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beginner ยท In-person
IN-PERSON FoundersHack Sydney 2026

March 19, 2026 - March 22, 2026

Ended

About the challenge FoundersHack is an inter-university hackathon designed to give students a hands-on introduction to startups and Australiaโ€™s ecosystem. Over 60 hours, collaborate with โ€ฆ

IN-PERSON Preventing Inaccurate Fills: Liquid Filling System Calibration

March 18, 2026

Date TBD

Technopack's liquid filling systems deliver accurate dosing for food, pharmaceutical, and chemical environments. Designed for speed and reliability, these machines optimize throughput, ensure product consistency, โ€ฆ

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databases ยท In-person
ONLINE MidNight Hackers

March 18, 2026 - March 25, 2026

Ended

Welcome to MidNight Hackers 2026, a global virtual hackathon where innovation, creativity, and execution come together in a high-impact, fast-paced environment. MidNight Hackers is designed โ€ฆ

ONLINE Dev Annual Hackathon

March 18, 2026 - March 30, 2026

Ended

Dev Annual Hackathon is a flagship, large-scale innovation event designed to bring together passionate developers, designers, engineers, and problem-solvers from diverse backgrounds to collaborate and โ€ฆ

IN-PERSON cybersage

March 17, 2026 - March 26, 2026

Ended

In CyberSage, participants are challenged to build innovative solutions at the intersection of artificial intelligence and cybersecurity using Google Gemini. The goal is to identify โ€ฆ

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education ยท security ยท web ยท In-person
IN-PERSON Code Concept

March 17, 2026 - March 13, 2026

Ended

Code Concept by Hacker's Unity is an interactive tech event designed to bring together aspiring coders, developers, and tech enthusiasts. Participants will engage in hands-on โ€ฆ

IN-PERSON Durham HackDay

March 17, 2026

Date TBD

Durham Build Day is a 4-hour mini-hackathon sprint on Tuesday, May 17th (16:00โ€“21:30) at the Venture Lab. A collaboration between Atom bank, Entrepreneurs Durham, and โ€ฆ

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beginner ยท low/no-code ยท In-person
ONLINE Rebuilding the OS: Core System Utilities Hackathon

March 17, 2026 - April 30, 2026

Ended

Modern computers rely on powerful operating systems that manage files, processes, and system resources. In this hackathon, participants will build core operating system utilities from โ€ฆ

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beginner ยท design ยท low/no-code ยท Online

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