Critical Ecosystem Partnership Fund (CEPF) invites Letters of Inquiry for grants supporting biodiversity conservation in the Wallacea Hotspot. The grants fund biodiversity conservation projects in Indonesia’s Wallacea region — reducing threats to endangered species, improving management of key biodiversity areas, and supporting sustainable natural resource use by Indigenous peoples and local communities across specific island and marine priority zones. Small grants are up to US$50,000 with a deadline of 26 September 2026. Large grants range from US$50,000 to US$150,000 with a deadline of 27 September 2026. Grants for Wallacea Biodiversity Hotspot
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Saudi Water Authority — Global Prize for Innovation in Water
The Saudi Water Authority invites innovators, researchers, universities, and specialized institutions worldwide to submit water-sector innovations to the Global Prize for Innovation in Water (GPIW), across six categories: desalination, water reclamation, conservation, digital water management, environmental sustainability, and wastewater solutions. Winners receive monetary awards; amounts are not specified on this source. Open to any nationality, at no cost to enter. The deadline is 30 September 2026. Global Prize for Innovation in Water
UN-Habitat — Urban Resilience and Disaster Risk Reduction (Latin America)
UN-Habitat seeks an academic institution or higher education organization to design and deliver a virtual regional capacity-building programme on urban resilience and disaster risk reduction across Bolivia, Colombia, Costa Rica, Cuba, Ecuador, El Salvador, Honduras, and Peru. The maximum award is US$50 thousand over 24 months. Eligible applicants are academic institutions or higher education organizations only. The deadline is 04 October 2026. Know more
Environmental Research & Education Foundation — Sustainable Solid Waste Management Research Program
The Environmental Research & Education Foundation (EREF) seeks applications for the Sustainable Solid Waste Management Research Program in North America. Pre-proposals must relate to sustainable solid waste management practices in the topic areas of waste conversion to energy, biological conversion technologies, and recycling, among others. Previously awarded grants have ranged from $15 thousand to over $500 thousand with an average grant size of about $160 thousand for 2 years. There are no restrictions in regard to geographic location. EREF has two deadlines per year with pre-proposals being accepted 15 days prior to the deadline date. The next application deadlines are 01 December 2026 and 01 March 2027. Find out how to apply for a grant
Welthungerhilfe — Global Food System Challenge
Welthungerhilfe and the Seeding The Future Foundation invite nonprofits, academic institutions, and early-stage for-profit or social enterprises worldwide to submit food-system innovations to the 6th Annual Global Food System Challenge, particularly addressing challenges in the Global South. Three award tiers are available: Seed Grants (US$25,000, up to eight awarded, for early prototypes), Growth Grants (US$100,000, up to three awarded), and Grand Prizes (US$250,000, up to two awarded). Eligible applicants are organizations, not individuals, from any country. Applications open 1 January 2027; the deadline is 15 February 2027. Global Food System Challenge
Water Witness International — Fair Water Action Fund
The Fair Water Action Fund supports civil society organizations, journalists, and researchers in the Global South—especially in Africa—to promote water justice and hold governments and corporations accountable for water security. Grants range from £3,000 to £36,000 for projects up to 12 months that focus on advocacy, community monitoring, investigative reporting, and systemic change. Eligible applicants include grassroots networks, NGOs, academic centers, and independent media. Priority is given to countries facing water scarcity and governance challenges. Applications are accepted on a rolling basis. Fair Water Action Fund
U.S. National Fish and Wildlife Foundation — Sea Turtle Conservation in the Western Hemisphere
The National Fish and Wildlife Foundation (NFWF) invites proposals under its Sea Turtles Program 2027 Request for Proposals. The program funds conservation work benefiting four sea turtle populations in the Western Hemisphere — leatherbacks and loggerheads in the Northwest Atlantic, and leatherbacks and hawksbills in the Eastern Pacific — with priority given to populations dependent on or migrating through U.S. waters. Funding priorities include stranding response and rehabilitation capacity, reducing bycatch through turtle-friendly fishing gear, restoring and protecting nesting beach habitat in Florida, the U.S. Virgin Islands, and Puerto Rico, and building regional conservation networks. Eligible applicants include nonprofits, government agencies at all levels, tribal governments, educational institutions, international organisations, and for-profit organisations. Most funded projects take place along U.S. beaches, facilities, or coastal waters; other projects elsewhere in the Western Hemisphere will be considered but at lower priority. Most awards range from US$50 thousand to US$400 thousand, and beach and bycatch projects require a one-to-one non-federal match in cash or in-kind services. Pre-proposals are due 19 August 2026. Sea Turtle Conservation
International Iguana Foundation — Grants for Iguana Conservation
The International Iguana Foundation makes grants to promote and enable iguana conservation. Preference will be given to projects that are components of approved species recovery plans; projects that directly contribute to the survival of endangered iguanas and their habitats; and projects that are part of an established conservation program. The Foundation looks for projects that have participation from range-countries and matching funds. Small-tier grants provide up to US$10 thousand over 1 year. Full proposals for small-tier grants in the 2026 cycle are due on 20 September 2026. Find this opportunity
Kendall College of Art and Design — Sustainable Design Challenge
The Wege Prize is an annual competition that seeks game-changing solutions for the future by inspiring college/university students around the world. Participants contend for US$65 thousand in total cash prizes. Teams have to develop ideas from an informal proposal into a robust and feasible solution informed by research, market analysis, and real-world prototyping and testing. Team applications are due on 04 October 2026. Know more
Donors’ Initiative for Mediterranean Freshwater Ecosystems — Freshwater Conservation Projects in the Mediterranean Basin
The Donors’ Initiative for Mediterranean Freshwater Ecosystems (DIMFE) launches a call for projects to fund work on the conservation and restoration of freshwater ecosystems and biodiversity, the sustainable use and management of water resources, and the development of sustainable financing mechanisms for freshwater conservation. Grants range from €100 thousand to €500 thousand (with 25% co-financing required for requests over €300 thousand). The call is open to NGOs, scientific institutions, local authorities, and small private enterprises in the region. The deadline for submission is 15 October 2026. Link to DIMFE