The UNICEF Leading Minds Fellowship on Climate Education is a global, youth-focused fellowship designed to empower young climate leaders to strengthen and transform climate education in formal and informal settings. Up to 12 fellows aged 10–30 will be selected to research, advocacy, policy shaping, storytelling, and systems change while receiving a stipend and access to mentorship, networking and visibility opportunities. Fellows are also eligible for up to US$20 thousand in grant support to expand their initiatives. The application deadline is 31 December 2025. UNICEF Leading Minds Fellowship
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UN Decade Youth Task Force — Microgrants
The UN Decade on Ecosystem Restoration Youth Task Force Microgrant Call supports youth-led initiatives that advance ecosystem restoration and environmental action under the UN Decade on Ecosystem Restoration. The call is open to youth-led groups, organizations, and informal collectives from around the world that are actively implementing or planning small-scale restoration, awareness, or community-based environmental projects. Selected initiatives receive microgrants of up to US$5,000 to support project implementation. Applications are open until 31 December 2025. More here
Massachusetts Institute of Technology — Water Innovation Prize 2025
The MIT Water Innovation Prize is a startup competition focused on water innovation. Submitted projects must involve a technology, product, service, or process aimed at solving a problem related to the world’s water challenges. Entering teams must include at least one student who is fully enrolled at any college or university. There are no restrictions regarding nationality. Winners will be awarded innovation grants of up to US$50 thousand. The application deadline for the statement of intent is 31 December 2025. Water Innovation Prize
New Africa Fund — Africa Impact Fundraising Grant
The Africa Impact Fundraising Grant (AIFG) is open to legally registered NGOs, community-based organisations or social enterprises from any of the member states of the African Union. Participating organisations receive online training on small-donor fundraising, then take part in a 30-day fundraising challenge; those that perform well may get up to US$5,000 in matching funds. Additionally, up to 10 top-performing organisations are invited to a week-long in-person workshop in Rwanda on topics like grant writing, donor outreach, budgeting, marketing and fundraising strategy. The application deadline is 16 December 2025. More here
Social Shifters — Global Innovation Challenge
Social Shifters announces the Global Innovation Challenge to help young leaders and founders solve the social or environmental issues that matter to them. The challenge seeks creative ideas, projects, and business solutions to the problems that matter to local communities and welcomes ideas from anywhere in the world. Participants compete for awards of up to US$10 thousand to deliver activities that improve lives, help communities, and protect the planet. All ideas must be led by young people aged between 18-30 years old. The application deadline is 12 December 2025. Link to Social Shifters
African Union Development Agency — Agribusiness Accelerator
The Home-Grown Solutions Agribusiness Accelerator (HGSA-A) offers support to established agribusiness enterprises across Africa. Eligible enterprises must operate in high-potential agribusiness value chains beyond primary production (such as agro-processing, input supply, logistics, distribution, digital agriculture, sustainable agriculture inputs). The application deadline is 14 December 2025. Details
Earth Journalism Network — Virtual Media Workshop: Climate Change in Indonesia
The Earth Journalism Network (EJN) hosts a five-day virtual workshop for journalists in Indonesia reporting on business, industry, energy and the environment. Applications are open to journalists working in any medium (online, print, television, radio) from all types of organizations across Indonesia. Participants who attend all sessions will receive a certificate of completion from EJN and will also be eligible to apply for a story grant following the workshop. The application deadline is 15 December 2025. Link to workshop details
Italian Agency for Development Cooperation — Wildlife Corridor Uganda
The Italian Agency for Development Cooperation (AICS) invites proposals to restore ecological connectivity and promote sustainable forest-based livelihoods in eastern Uganda. The initiative aims to re-establish a wildlife corridor between the Matheniko‑Bokora Wildlife Reserve and Pian Upe Wildlife Reserve, combining reforestation, agroforestry, restoration of indigenous tree species, habitat conservation, and development of non-timber forest enterprises to support local communities. The total grant pool offered is up to €650 thousand. Eligible applicants include NGOs, private companies, public operators, local authorities or international organizations registered in Uganda or other eligible countries under EU regulation. The application deadline is 15 December 2025. Details here
Earth Journalism Network — Virtual Media Workshop: Marine Protected Areas
The Earth Journalism Network (EJN) hosts a three-day virtual media workshops for journalists in Ghana, Mexico and the Philippines to strengthen their knowledge of the 30×30 marine conservation target and initiatives being implemented to reach it. Applications are open to journalists working in any medium (online, print, television, radio) and other media practitioners with experience covering ocean issues. EJN seeks to award 25 grants to journalists to support in-depth reporting. The application deadline is 16 December 2025. Details here
SparkUp Initiative — Fundraising Workshop
SparkUp Initiative offers a fellowship that helps women-led NGOs and grassroots organizations worldwide build their fundraising and project-development capacities. Participants receive training in crafting effective fundraising strategies, writing grant proposals for international foundations and public institutions, and exploring crowdfunding and digital fundraising. The program is open to women-led organizations from developing countries in Asia, Africa, and parts of Europe. The next application deadline is 20 December 2025. Link