The Marsh Christian Trust offers long-term core funding to small registered charities. It supports a few hundred different charities per annum across fields that include environmental causes and animal welfare, among other subjects. Since its inception, the Trust has been a supporter of organizations devoted to nature conservation and the well-being of wildlife, both within the UK and internationally. Grants range from £300 to £2,000. The applicant must be a UK-registered charity. Applications are sent to the Trust’s postal address in London, where they are reviewed continuously. About the Marsh Christian Trust
nonprofit orgs
Critical Ecosystem Partnership Fund — Small Grants Program, Sri Lanka
The Critical Ecosystem Partnership Fund (CEPF) and IUCN invite Letters of Inquiry from Sri Lankan NGOs, community-based organizations, Indigenous and women’s groups for projects supporting community engagement in managing threatened ecosystems and species, under the GEF Small Grants Program. Grants are up to US$60,000. Eligible only in five districts: Nuwara Eliya, Kegalle, Ratnapura, Galle, and Matara. The deadline is 09 October 2026. Small Grants Program
Biodiversa+ — BiodivFuture Joint Call for Transnational Research on Novel Ecosystems
Biodiversa+ invites transnational research consortia to study novel ecosystems — biodiversity, socio-ecological dynamics, and future trajectories — across terrestrial, freshwater, and marine realms worldwide. No fixed grant amount; budgets and eligible costs vary by each participating national/regional funding organization. Consortia must include research teams from at least three participating countries, including at least two EU Member States or Horizon Europe Associated Countries; over 30 funding organizations from 25 countries participate. Pre-proposals are due early November 2026. BiodivFuture Joint Call
F. M. Kirby Foundation — Social Impact Prize
F. M. Kirby Impact Prize is an annual global prize of US$150 thousand that amplifies and accelerates the work of enterprises working to scale their impact on social or environmental problems around the world. Applicants must have strong evidence of impact over at least 3 years and a plan for how to use the prize to scale that impact in the next 3-5 years. The prize is open to nonprofit, for-profit, or hybrid organizations working anywhere in the world. The deadline for applications is 02 December 2026. Know more
Roger Williams Park Zoo — Danforth Conservation Grants
The Sophie Danforth Conservation Biology Fund makes grants of up to US$1 thousand to protect threatened wildlife and habitats worldwide. Priority is for projects that demonstrate a multi-disciplinary approach to ecosystem conservation, and that involve in-country collaborators. Projects must directly affect biological conservation. Applicants can be of any nationality but must be associated with an organization (non-profit, university, etc.) through which they can receive funding. The application deadline is 01 January 2027. About the conservation grants
Waterloo Foundation — Environment Fund: Marine Resources
The Waterloo Foundation manages an Environment Fund that supports projects to manage and conserve marine resources. Applications are invited from UK charities in partnership with local organizations in the developing world, and from non-UK organizations that can provide suitable references in the UK. The majority of grants range from £50 thousand to £100 thousand for projects of up to three years. Application deadlines are 01 March and 01 September each year. About the Marine Fund
Asia Community Foundation — Southeast Asia Ocean Fund
The 30×30 Southeast Asia Ocean Fund invites NGOs, research institutions, and civil society organizations to apply for grants supporting marine conservation, prioritizing projects led by or engaging coastal frontline communities. Grants of up to US$250,000 are awarded over multiple years, with no predetermined activity restrictions. Eligible applicants include local NGOs and research institutions in Southeast Asia; individuals, private enterprises, and government bodies are not eligible. Applications, in the form of an Expression of Interest, are accepted on a rolling basis. Link
Network for Social Change — Development and Environment
The Network for Social Change supports socially progressive projects in the UK and developing countries. Supported projects include some in the area of environment, natural resources, and related fields. The Network does not accept unsolicited funding applications. However, the Network is willing to receive project ideas from outside of its membership via its Project Noticeboard. About
Global Energy Alliance — Energy Access in Latin America
The Global Energy Alliance for People and Planet invites Expressions of Interest for its Universal Access Coalition Financing Facility, supporting solar, mini-grid, and productive-use energy access projects across Latin America and the Caribbean. The Facility offers Technical Assistance grants of US$100 thousand to US$400 thousand and Investment Financing of US$200 thousand to US$750 thousand in grants and concessional loans. Eligible applicants include government agencies, utilities, NGOs, project developers, and private-sector organizations in Phase One’s eight countries: Bolivia, Brazil, Colombia, Ecuador, Guyana, Haiti, Peru, and Suriname. The application deadline is 09 September 2026. More
GEF Small Grants Programme — Scaling High-Impact Environmental Solutions
IUCN and the Global Environment Facility invite proposals from civil society organizations to scale or replicate proven environmental solutions in Africa, Latin America and the Caribbean, and Asia-Pacific and Oceania, with grants up to US$300 thousand. Applicants must be legally registered CSOs based in a GEF-eligible country, working in one of five priority areas: threatened ecosystems and species, sustainable agriculture and food security, low-carbon energy, chemicals and waste, or sustainable urban solutions. The deadline is 15 September 2026. CSO Challenge