Hackathons in September 2026

Hack123 tracks 37 hackathons whose registration closes or event ends in September 2026; all have closed for now — use them as a guide to the next edition. Biggest prizes: GOAI Global Open-source AI Challeng… (¥5M), Cal Hacks 13.0 ($127.4k). Breakdown: 16 in China, 21 international, 10 online-only, 11 for students, 5 beginner-friendly.

RelatedAI hackathons AI Agent hackathons Student hackathons Online hackathons Hackathons in Shanghai Hackathons in Shenzhen Hardware & IoT hackathons Hackathons in Macau Hackathons in Stanford Hackathons in Nanjing

September 2026 at a glance

Deadlines by week: 1–7 2 · 8–14 9 · 15–21 9 · 22–30 17 · busiest day: Sep 27 (6)
Format & region: 20 in person · 5 hybrid · 10 online-only · 16 in China · 21 international
Host cities: Shanghai 3, Shenzhen 3, San Francisco 3, Goa 1, Stanford 1, Princeton 1, Seoul 1, Hong Kong 1, Nanjing 1, Zhuhai 1, +8
Top themes: AI 27, AI Agent 14, AI Coding 5, Hardware & IoT 5, AIGC & Generative AI 3, Web3 & Blockchain 3
Biggest prizes: GOAI Global Open-source AI Ch… ¥5M, Cal Hacks 13.0 $127.4k, GWDC 2026 Korea Hackathon $100k, Bitget AI Hackathon S2 $50k, Insta360 Bold Maker Smart Ima… ¥300k
Who can join: 11 for students · 5 beginner-friendly · 23 with cash prizes listed
Still open this month: All deadlines this month have passed; use them as a preview of next year’s editions.

Months

February 2027 4 January 2027 13 December 2026 44 November 2026 249 October 2026 178 August 2026 25 July 2026 3 June 2026 3 May 2026 5 April 2026 3 March 2026 3 February 2026 5

Filter every hackathon by prize, level and date on the home page.