Climate & Sustainability Hackathons in 2026
Explore 481 climate & sustainability hackathons in 2026. Hackathons addressing climate change, sustainability, clean energy, and environmental challenges.
Hackathons
37
Avg Prize
$214K
Organizers
61
Sunday, November 15, 2026
Ongoing
OCSEFHacks 3
In Person
Nov 14 – Nov 15, 2026HackPacWestminster, United States
Climate Tech
Social Impact
Ongoing
Green Shift Hacks
Online
Oct 19 – Nov 17, 2026HackathonForEveryoneOnline$125
Climate Tech
Social Impact
Ongoing
Hackathon Hollandse Luchten
In Person
Nov 13 – Nov 19, 2026Hollandse Luchten (Province of Noord-Holland, Waag Futurelab, with RIVM, TNO, GGD)Haarlem, Netherlands
Artificial Intelligence
Climate Tech
Social Impact
Ongoing
Xylem Global Student Innovation Challenge 2026
Online
Sep 28 – Nov 20, 2026XylemOnline
Climate Tech
Social Impact
Ongoing
GreenBonn Hackathon 2026
In Person
Nov 13 – Nov 21, 2026Centrum für Entrepreneurship, Innovation und MittelstandBonn, Germany
Climate Tech
Data Science
Ongoing
STEM2Connect AI Hackathon
Online
Oct 17 – Nov 22, 2026STEM2ConnectOnline
Artificial Intelligence
Climate Tech
Education
Ongoing
Hackathon Agéntico SoftwareChido 2026B
Online
Oct 6 – Nov 25, 2026ITESOOnline
Climate Tech
Social Impact
Ongoing
recHERsion 2026 | Women-Only Hackathon
Online
Oct 14 – Nov 25, 2026National Institute of Technology Karnataka (NITK), SurathkalOnline$600
Health
Climate Tech
Social Impact
Ongoing
CMR HACKFEST 4.0
In Person
Oct 29 – Nov 25, 2026CMR College of Engineering and Technology (CMRCET), HyderabadHyderabad, India$3K
Health
Climate Tech
Agritech
Ongoing
Solve - a - Thon | National Hackathon
In Person
Sep 15 – Nov 28, 2026Swami Rama Himalayan University (SRHU), Baksar Wala, UttarakhandDehradun, India$1K
Artificial Intelligence
Climate Tech
Edtech
Ongoing
Avishkaar Season 4 (Virtual) Hackathon: A National-Level Innovation Challenge
Online
Sep 16 – Nov 28, 2026Aditya Institute of technology and management,tekkaliOnline$600
Health
Climate Tech
Social Impact
Ongoing
WIE HackEarth 2.0
In Person
Nov 1 – Nov 30, 2026Galgotias University (GU), Greater NoidaGautam Buddha Nagar, India
Artificial Intelligence
Climate Tech
Social Impact
Ongoing
Samadhan 2026( National Social Innovation Challenge)
In Person
Jul 31 – Dec 15, 2026UPAY (Underprivileged Advancements by Youth)Delhi, India
Social Impact
Climate Tech
Edtech
Ongoing
Hacksmart 2.0
Hybrid
Nov 5 – Dec 15, 2026Geek RoomGurugram, India
Climate Tech
Ongoing
Ooty Hacks
Hybrid
Oct 8 – Dec 16, 2026HackhereOoty, India
Artificial Intelligence
Climate Tech
Ongoing
K Hacks 4.0
Online
Oct 26 – Dec 18, 2026Anna University (AU), ChennaiOnline$7K
Fintech
Health
Climate Tech
Ongoing
Hackathon 2026 Challenge
Online
Mar 1 – Dec 18, 2026TechHub Africa LLCOnline$1K
Climate Tech
Social Impact
Ongoing
Srujan 2026 - 1.5 Lakh Mega Hackathon In association with L&T - Online Round is Free, No Rs 1200 Charged in it
Hybrid
Oct 15 – Dec 19, 2026Bk birla CollegeKalyan, India
Climate Tech
Social Impact
Cybersecurity
Ongoing
IDEATHON- FutureX: Innovating for Global Challenges
Online
Nov 8 – Dec 19, 2026Skill2CareerOnline
Climate Tech
Social Impact
Agritech
Ongoing
Arbiter Hacks V1
Online
Oct 20 – Dec 21, 2026ArbiterOnline$8K
Climate Tech
Ongoing
AVISHKAAR Season 4 Hackathon: A National-Level Innovation Challenge
In Person
Sep 16 – Dec 26, 2026Aditya Institute of Technology and Management (AITAM), Tekkai, Andhra PradeshTekkali, India$4K
Health
Climate Tech
Social Impact
Ongoing
NewYear X Thon 2K27
Online
Sep 29 – Dec 31, 2026BrainwavesOnline$60
Cloud
Edtech
Climate Tech
Ongoing
Strategy Sprint | TECHKRITI | IIT KANPUR
In Person
Sep 30 – Dec 31, 2026TechkritiKalyanpur, India
Cloud
Edtech
Climate Tech
Ongoing
Build for Earth
Online
Nov 8, 2026 – Jan 16, 2027Online
Climate Tech
Sustainability
Social Impact
Ongoing
Tech Expo 2027
Hybrid
Oct 16, 2026 – Jan 29, 2027Parul University (PU), VadodaraVadodara, India$2K
Climate Tech
Social Impact
Ongoing
Hacknova'27 2.0
In Person
Oct 19, 2026 – Feb 7, 2027Bharati Vidyapeeth (Deemed to be University)Kharghar, India$2K
Health
Climate Tech
Social Impact
Ongoing
Indradhanu: PCCOE International Grand Challenge 2026
In Person
Jun 30, 2026 – Feb 14, 2027Pimpri Chinchwad College of Engineering (PCCOE), PunePune, India$2K
Artificial Intelligence
Climate Tech
Cloud
Ongoing
Guardians of the Earth – Space for Change
Hybrid
Nov 7, 2026 – Mar 19, 2027Deutsche Raumfahrtagentur im DLRBremerhaven, Germany
Climate Tech
Monday, November 16, 2026
Wednesday, November 18, 2026
Thursday, November 19, 2026
Friday, November 20, 2026
Upcoming
Social Entrepreneurship Hackathon: Collective Intelligence for Sustainable Communities
In Person
Nov 20 – Nov 21, 2026UNIHUB - Universitatea din BucureștiBucharest, Romania
Climate Tech
Social Impact
Entrepreneurship
Upcoming
GreenChem Hackathon
In Person
Nov 20 – Nov 22, 2026United Nations Industrial Development Organization (UNIDO) GreenChem ProjectLviv, Ukraine
Climate Tech
Upcoming
Hackathon Across 2026: Innovating for Water in the Cross-Border Mediterranean Region
In Person
Nov 20 – Nov 22, 2026University of Perpignan Via Domitia (UPVD) in collaboration with the University of Girona (UdG)Perpignan, France
Climate Tech
Social Impact
Upcoming
Milano Agentic City Hackathon
In Person
Nov 20 – Nov 21, 2026NextMindLabMilan, Italy
Artificial Intelligence
Climate Tech
Social Impact
Upcoming
Amsterdam Circularity Hackathon 2026
In Person
Nov 20 – Nov 22, 2026Caty GaitanAmsterdam, Netherlands
Climate Tech
Upcoming
Bioeco Camp
In Person
Nov 20 – Nov 22, 2026Quest for bioeconomyBezannes, France
Climate Tech
Agritech
Upcoming
sprintd Basel · GreenTech Edition
In Person
Nov 20 – Nov 22, 2026sprintdBasel, Switzerland$6K
Climate Tech