Upcoming Deadlines

Range 30 days 3 months 6 months 12 months
Source EU Federal (DE) Schleswig-Holstein Mecklenburg-Vorpommern Lower Saxony Foundation Private US Foundation UK Nordic UN / Multilateral Corporate Impact Investor Philanthropic Network International
Relevance ≥70% ≥50% ≥30%
Topic Aquaculture Biodiversity Blue Economy Capacity Building Circular Economy Climate Coastal Protection Coral Reefs Education Fisheries Marine Conservation Marine Protected Areas Plastic Waste Pollution Recycling & Upcycling Research Seaweed & Algae Waste Management
Mechanism Accelerator Blended Finance Grant Investment Loan / Concessional Finance Prize Technical Assistance
Region Africa Arctic Baltic Sea Global India Mediterranean Nordic / Denmark North Sea Southeast Asia
Audience For Communities / Cooperatives For NGOs For Researchers For Startups
Funder-type Corporate Family Office Foundation Government Impact Investor Multilateral Philanthropic Network Research Council
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4 fixed deadlines, 66 rolling/open

May 2026

25.05. 6d left
Illuminating Climate Solutions (NGS + The Climate Pledge) · National Geographic Society · Up to $100,000. Recommended: up to $20,000 for applicants with five or fewer years of experience. Funds may be used over two years.
Foundation Grant Global Biodiversity Climate Research
31.05. 12d left
Illuminating the Mekong River Basin · National Geographic Society · Up to $20,000. Funds usable over two years.
Foundation Grant Southeast Asia Biodiversity Fisheries Marine Conservation Research
31.05. 12d left
Common Waters: Community-based Coastal and Riverine Stewardship · National Geographic Society · Level I: up to $20,000 (for earlier-career applicants, first-time NGS grantees). Level II: up to $75,000 (for established practitioners or prior NGS grantees).
Foundation Grant Arctic Global Mediterranean Biodiversity Climate Coastal Protection Fisheries Marine Conservation

June 2026

04.06. 16d left
Preserving Traditional Arts (NGS + Lindblad) · National Geographic Society · Level I: up to $20,000 (earlier-career). Level II: up to $75,000 (established practitioners or prior NGS grantees). Funds usable over up to 2 years.
Foundation Grant Global Mediterranean Capacity Building Education

Rolling / Open Deadlines

Rolling
Ellen MacArthur Foundation Global Commitment on Plastics · Ellen MacArthur Foundation · 12-month sign-up window for Global Commitment 2030 (started 2025)
For NGOs Foundation Technical Assistance Global Circular Economy Plastic Waste Pollution Recycling & Upcycling
Rolling
Schwab Foundation for Social Entrepreneurship · Schwab Foundation for Social Entrepreneurship · 2026 awards already announced; 2027 cycle TBD
For NGOs For Startups Foundation Prize Global Biodiversity Capacity Building Circular Economy Climate Waste Management
periodic
Pure Ocean Challenges — Call for Projects · Pure Ocean · Annual, September 1 – October 1 (Phase 1); Phase 2 by invitation (October 20 – November 23)
For NGOs For Researchers Foundation Grant Global Mediterranean Biodiversity Climate Marine Conservation Plastic Waste Pollution Research
periodic
Whitley Fund for Nature (Whitley Awards) · Whitley Fund for Nature · Annual, applications typically open in autumn for the following spring ceremony; 2026 round now closed (ceremony held 29 April 2026)
For NGOs Foundation Grant Prize Africa Global India Southeast Asia Biodiversity Coastal Protection Fisheries Marine Conservation
periodic
UEFA Foundation for Children – Annual Call for Projects · UEFA Foundation for Children · Annual, typically June-July
For NGOs Foundation Grant Global Biodiversity Education
periodic
PADI AWARE Foundation Community Grant Program · PADI AWARE Foundation · Annual, typically October (most recent: 3 October 2025)
For NGOs Foundation Grant Global Coral Reefs Marine Conservation Marine Protected Areas Plastic Waste Pollution
periodic
Prince Albert II of Monaco Foundation — Call for Projects · Prince Albert II of Monaco Foundation · Annual, typically autumn (2025 call closed; next call expected autumn 2026)
For NGOs Foundation Grant Global Mediterranean Biodiversity Climate Coastal Protection Coral Reefs Marine Conservation Marine Protected Areas Plastic Waste Pollution
periodic
The Earthshot Prize · The Earthshot Prize · Annual, typically awards ceremony in November
Foundation Prize Global Biodiversity Climate Marine Conservation Plastic Waste Waste Management
periodic
Oceanic Society: Global Ocean Cleanup — Annual Partner Grant Programme · Oceanic Society · Annual, typically spring (2026 cycle closed; 2026 event: June 13-14, 2026)
For Communities / Cooperatives For NGOs Foundation Grant Global Marine Conservation Plastic Waste Pollution
periodic
The MedFund - Fondation Prince Albert II de Monaco · The MedFund · Annual; Call 2025 Phase 1 deadline was 15 May 2025, Phase 2 deadline was 13 July 2025
Foundation Grant Mediterranean Biodiversity Marine Conservation Marine Protected Areas
periodic
Björn Carlson Baltic Sea Prize (BalticSea2020) · Björn Carlsons Östersjöstiftelse (BalticSea2020) · Annual; nomination period not specified on website
For Researchers Foundation Prize Baltic Sea Nordic / Denmark Biodiversity Marine Conservation
periodic
Schwab Foundation for Social Entrepreneurship - Social Innovation Awards · Schwab Foundation for Social Entrepreneurship · Annual; typically applications/nominations open mid-year for award announcement the following year
Foundation Prize Global Capacity Building Circular Economy
Rolling
King Baudouin Foundation - EU Missions Horizon Europe: Restore our Ocean and Waters · King Baudouin Foundation · Call-specific; rolling calls published at kbs-frb.be
For NGOs Foundation Grant Baltic Sea Global Biodiversity Circular Economy Marine Conservation Plastic Waste Pollution
periodic
BINGO! Environmental Foundation Lower Saxony · Niedersaechsische Bingo-Umweltstiftung (Lower Saxony BINGO! Environmental Foundation) · Periodic
For NGOs Foundation Grant North Sea Biodiversity Capacity Building Coastal Protection Marine Conservation Pollution
periodic
Global Ghost Gear Initiative (GGGI) - Small Grants Program · Global Ghost Gear Initiative (GGGI) · Periodic annual round; 2024 and 2025 recipients were selected; next round timing not specified on website
Foundation Grant Global Capacity Building Fisheries Marine Conservation Plastic Waste Waste Management
periodic
Aage V. Jensen Naturfond – Nature Conservation Grants · Aage V. Jensen Naturfond · Periodic — three application rounds per year
Foundation Grant Nordic / Denmark Biodiversity Capacity Building Marine Conservation Research
periodic
Aage V. Jensens Fond – General Grants (Nature, Greenland, Faroe Islands) · Aage V. Jensens Fond · Periodic — three board meetings per year to process applications
Foundation Grant Arctic Nordic / Denmark Biodiversity Education Research
periodic
Deutsche Postcode Lotterie - Environmental Project Funding · Deutsche Postcode Lotterie · Periodic, multiple rounds per year
For NGOs Foundation Grant Nordic / Denmark Biodiversity Coastal Protection Education Marine Conservation Pollution
periodic
Aage V. Jensen Naturfond – Grant Programme (3x/year) · Aage V. Jensen Naturfond · Periodic, three times per year
For NGOs For Researchers Foundation Grant Nordic / Denmark Biodiversity Marine Conservation Research
Rolling
[PDF] INITIATIVES & PROJECTS - Fondation Prince Albert II de Monaco · Prince Albert II of Monaco Foundation (Fondation Prince Albert II de Monaco) · Rolling / annual calls per initiative (e.g., DIMFE annual call; Polar Initiative call launched June 2024; Pelagos Initiative call 2024). No single universal deadline.
For NGOs For Researchers For Startups Foundation Blended Finance Grant Prize Technical Assistance Africa Arctic Global Mediterranean Southeast Asia Biodiversity Blue Economy Climate Coastal Protection Coral Reefs Fisheries Marine Conservation Marine Protected Areas Plastic Waste Pollution Research
Rolling
Marine Nature Conservation Fund (Meeresnaturschutzfonds) · Deutsche Bundesstiftung Umwelt (DBU) · Rolling basis
Foundation Grant Baltic Sea North Sea Biodiversity Coastal Protection Marine Conservation Marine Protected Areas Research
Rolling
DBU General Project Funding (Projektfoerderung) · Deutsche Bundesstiftung Umwelt (DBU) · Rolling basis
For NGOs For Researchers Foundation Grant Biodiversity Circular Economy Marine Conservation Pollution Research Waste Management
Rolling
Baltic Conservation Foundation - Funding · Baltic Conservation Foundation · Rolling basis
For NGOs Foundation Grant Loan / Concessional Finance Baltic Sea Nordic / Denmark Biodiversity Capacity Building Coastal Protection Fisheries Marine Conservation Marine Protected Areas Pollution
Rolling
Waitt Foundation - Rapid Ocean Conservation (ROC) Grants · Waitt Foundation · Rolling basis
For NGOs Foundation Grant Global Fisheries Marine Conservation Marine Protected Areas
Rolling
Esmee Fairbairn Foundation - Natural World / Marine Grants · Esmee Fairbairn Foundation · Rolling basis
For NGOs Foundation Grant Biodiversity Fisheries Marine Conservation
Rolling
11th Hour Racing · 11th Hour Racing · Rolling basis
Foundation Grant Global Climate Coastal Protection Marine Conservation
Rolling
DOEN Foundation - Regenerative Economy Programme · DOEN Foundation · Rolling basis
For NGOs Foundation Grant Global Biodiversity Circular Economy Climate
Rolling
Greenpeace Environmental Foundation (Umweltstiftung Greenpeace) - Marine Conservation Grants · Umweltstiftung Greenpeace · Rolling basis
For NGOs Foundation Grant Biodiversity Climate Marine Conservation Pollution
Rolling
DBU Marine Nature Conservation Fund - North and Baltic Sea Protection · Deutsche Bundesstiftung Umwelt · Rolling basis
Foundation Grant Baltic Sea North Sea Biodiversity Coastal Protection Marine Conservation Marine Protected Areas Research
Rolling
Baltic Sea Conservation Foundation (BaltCF) · Baltic Sea Conservation Foundation · Rolling basis
For NGOs Foundation Grant Baltic Sea Biodiversity Capacity Building Coastal Protection Fisheries Marine Conservation Marine Protected Areas
Rolling
Baltic Sea Conservation Foundation (BaltCF) · Baltic Sea Conservation Foundation (BaltCF) · Rolling basis
For NGOs Foundation Grant Baltic Sea Biodiversity Coastal Protection Fisheries Marine Conservation Marine Protected Areas
Rolling
Schmidt Ocean Institute - Research Vessel & Grant Program · Schmidt Ocean Institute · Rolling basis
Foundation Technical Assistance Global Biodiversity Blue Economy Marine Conservation Research
Rolling
Earthwatch Institute - Ocean Ecosystems Research Grants · Earthwatch Institute · Rolling basis
For Researchers Foundation Grant Global Biodiversity Marine Conservation Research
Rolling
Grant-making - Oak Foundation · Oak Foundation · Rolling basis
Foundation Grant Africa Global Southeast Asia Biodiversity Climate Fisheries Marine Conservation
Rolling
DOEN Foundation - Project Grants · DOEN Foundation · Rolling basis
Foundation Grant Africa Circular Economy Climate
Rolling
DOEN Foundation - Institutional Grants - GET.invest · DOEN Foundation · Rolling basis
Foundation Grant Africa Circular Economy Climate
Rolling
Circular Entrepreneurship - Stichting DOEN · DOEN Foundation · Rolling basis
Foundation Blended Finance Grant Loan / Concessional Finance Africa Global Circular Economy Recycling & Upcycling Waste Management
Rolling
Sustainable Energy - Stichting DOEN · DOEN Foundation · Rolling basis
Foundation Blended Finance Grant Loan / Concessional Finance Africa Global India Blue Economy Climate
Rolling
Global Fund for Coral Reefs - Fondation Prince Albert II de Monaco · Global Fund for Coral Reefs (GFCR) · Rolling basis
Foundation Multilateral Blended Finance Grant Investment Africa Global Southeast Asia Biodiversity Blue Economy Coral Reefs Marine Conservation Marine Protected Areas
Rolling
Realdania - Apply for Funding: Philanthropy for Built Environment and Circular Economy · Realdania · Rolling basis
For NGOs Foundation Grant Nordic / Denmark Circular Economy Climate
Rolling
15. Juni Fonden - Environment and Nature Conservation Grants · 15. Juni Fonden · Rolling basis
For NGOs Foundation Grant Nordic / Denmark Biodiversity Marine Conservation
Rolling
Nordea-fonden - Sustainability and Nature Support Grants · Nordea-fonden · Rolling basis
For NGOs Foundation Grant Nordic / Denmark Capacity Building Education
Rolling
A.P. Moller Foundation General Grant Program · A.P. Moller Foundation · Rolling basis
For NGOs Foundation Grant Nordic / Denmark Climate Education Research
Rolling
11th Hour Racing Grant Program · 11th Hour Racing · Rolling basis
Foundation Grant Global Circular Economy Education Marine Conservation Plastic Waste Pollution
Rolling
Aage V. Jensen Charity Foundation — Nature Conservation · Aage V. Jensen Charity Foundation · Rolling basis
For NGOs Foundation Grant Africa Arctic Global Southeast Asia Biodiversity Capacity Building Coastal Protection Marine Conservation Marine Protected Areas
Rolling
Veolia Foundation Project Support Grant · Veolia Foundation · Rolling basis
Corporate Foundation Grant Global Biodiversity Capacity Building Pollution Waste Management
Rolling
A.P. Møller Fonden — Grant Applications · A.P. Møller Fonden · Rolling basis
Foundation Grant Nordic / Denmark Blue Economy Capacity Building Marine Conservation Research
Rolling
Packard Foundation Ocean Initiative · David and Lucile Packard Foundation · Rolling basis
Foundation Grant Global Biodiversity Blue Economy Climate Fisheries Marine Conservation Marine Protected Areas
Rolling
Nordea-fonden — Ud i det fri (Outdoor Nature Program) · Nordea-fonden · Rolling basis
Foundation Grant Nordic / Denmark Biodiversity Coastal Protection Education Marine Conservation
Rolling
Nordea-fonden — Large Grants (over 1 million DKK) · Nordea-fonden · Rolling basis
Foundation Grant Nordic / Denmark Biodiversity Coastal Protection Education Marine Conservation
Rolling
Nordea-fonden — Liv i det lokale (Local Community Grants) · Nordea-fonden · Rolling basis
For NGOs Foundation Grant Nordic / Denmark Biodiversity Coastal Protection Education Marine Conservation
Rolling
Waitt Foundation Rapid Ocean Conservation (ROC) Grants – Small Grants for Island Nation Ocean Conservation · Waitt Foundation · Rolling basis
For NGOs For Researchers Foundation Grant Fisheries Marine Conservation Marine Protected Areas
Rolling
Circular Valley Circular Economy Accelerator – Batch 10 · Circular Valley Foundation · Rolling basis
For Startups Foundation Accelerator Circular Economy
Rolling
The Ocean Foundation Grantmaking · The Ocean Foundation · Rolling basis (Letters of Inquiry reviewed quarterly; full proposals by invitation only)
For NGOs Foundation Grant Global Biodiversity Capacity Building Coastal Protection Education Marine Conservation Marine Protected Areas
Rolling
MSC Ocean Stewardship Fund · Marine Stewardship Council · Rolling basis (Recertification Assistance Fund open on rolling basis; annual grants cycle currently closed)
Foundation Grant Global Fisheries Marine Conservation Research
Rolling
Adessium Foundation - Nature and Living Environment Programme · Adessium Foundation · Rolling basis (invitation-only; no open calls)
For NGOs Foundation Grant Mediterranean Biodiversity Coastal Protection Fisheries Marine Conservation Marine Protected Areas Pollution
Rolling
11th Hour Racing Grant Program · 11th Hour Racing · Rolling basis - applications accepted year-round in 2026
For NGOs Foundation Grant Global Circular Economy Coastal Protection Education Marine Conservation Plastic Waste
Rolling
DOEN Foundation Funding Opportunities · DOEN Foundation (Stichting DOEN) · Rolling basis - applications accepted year-round via online portal
For NGOs Foundation Grant Africa Global Biodiversity Capacity Building Circular Economy Waste Management
Rolling
Bezos Earth Fund – Conserving & Restoring Nature Program · Bezos Earth Fund · Rolling basis — no open call; grants awarded on invite-only or strategic partnership basis
For NGOs Foundation Grant Global Biodiversity Coastal Protection Marine Conservation Marine Protected Areas
Rolling
Ashoka Fellowship - Support for Social Entrepreneurs · Ashoka · Rolling basis; nominations accepted year-round through Ashoka country offices
For NGOs Foundation Grant Global Capacity Building Circular Economy Waste Management
Rolling
Stiftung Mercator - Climate Protection Funding · Stiftung Mercator · Rolling submissions
For NGOs For Researchers Foundation Grant Capacity Building Climate
Rolling
Endangered Landscapes and Seascapes Programme (ELSP) · Endangered Landscapes & Seascapes Programme (ELSP) / Arcadia Fund · Rolling; open calls publicised when opened — no permanent deadline stated
For NGOs Foundation Grant North Sea Biodiversity Coastal Protection Marine Conservation
periodic
RAIN Challenge – Resilient Agriculture Innovations for Nature (East Africa) · Munich Re Foundation · Unknown
For NGOs Foundation Prize Africa Biodiversity Capacity Building Climate
periodic
Blue Action Fund Grant Programme · Blue Action Fund · Upcoming call planned Q2/2026 (Mangroves, Blue Carbon Markets and 30x30 in Indonesia, Philippines, Vietnam and India). No currently open call as of May 2026.
For NGOs Foundation Grant Africa India Southeast Asia Biodiversity Coastal Protection Marine Conservation Marine Protected Areas
periodic
King Baudouin Foundation - Climate, Environment and Biodiversity Program · King Baudouin Foundation · Varies by call; approximately 150-180 calls published annually
Foundation Grant Global Biodiversity Circular Economy Climate Waste Management
Rolling
Circular Economy Accelerator (CEA) by Fetola · Fetola (in partnership with Nedbank) · Waiting list open (no fixed deadline for next cohort)
For Startups Corporate Foundation Accelerator Technical Assistance Africa Capacity Building Circular Economy Waste Management