Funding search
Find who already funds work like yours. Private foundations don’t post open calls, so nobody can search them. We read IRS filings instead — 9.6 million grants from 174,053 foundations and grantmaking charities, searchable by what the money was actually for.
Foundation based inAny state AL AK AZ AR CA CO CT DE DC FL GA HI ID IL IN IA KS KY LA ME MD MA MI MN MS MO MT NE NV NH NJ NM NY NC ND OH OK OR PA RI SC SD TN TX UT VT VA WA WV WI WY PR VI Gave to recipients inAny state AL AK AZ AR CA CO CT DE DC FL GA HI ID IL IN IA KS KY LA ME MD MA MI MN MS MO MT NE NV NH NJ NM NY NC ND OH OK OR PA RI SC SD TN TX UT VT VA WA WV WI WY PR VI Funder typeBoth Private foundations Charities & associations Grants of at leastAny size $10k $50k $100k Active sinceAny year 2023 or later 2024 or later
12 funders with a record of paying for “nuclear”
Where the money went Peter G Peterson Foundation → Nuclear Threat Initiative Inc: $9.0M across 7 grants, latest 2024 John D and Catherine T Macarthur Foundation (Consolidated) → Nuclear Threat Initiative Inc: $4.2M across 4 grants, latest 2023 Gordon E and Betty I Moore Foundation → President and Fellows of Harvard College: $3.9M across 3 grants, latest 2024 Carnegie Corporation of New York → Nuclear Threat Initiative Inc: $3.1M across 4 grants, latest 2024 The Raymond Frankel Foundation → American Academy of Arts and Science: $2.0M across 4 grants, latest 2025 Bright Horizon Foundation → Nuclear Threat Initiative: $2.0M across 2 grants, latest 2023 Effective Ventures Foundation USA Inc → Council On Strategic Risks: $1.6M across 1 grant, latest 2021 The Heising-Simons Foundation → California Institute of Technology: $1.2M across 3 grants, latest 2024 The Simons Foundation Inc → Stony Brook Foundation Inc: $1.0M across 2 grants, latest 2023 Rsf Social Finance Inc → Beyond Nuclear: $704K across 4 grants, latest 2024 Ploughshares Fund Inc → President and Fellows of Middlebury College: $455K across 2 grants, latest 2024 Prospect Hill Foundation Inc → Federation of American Scientists: $140K across 4 grants, latest 2024 John D and Catherine T Macarthur Foundation (Consolidated) → President and Fellows of Middlebury College: $3.5M across 6 grants, latest 2023 Carnegie Corporation of New York → National Security Archive Fund Inc: $2.4M across 7 grants, latest 2024 Bright Horizon Foundation → Ploughshares Fund: $1.0M across 1 grant, latest 2022 Gordon E and Betty I Moore Foundation → Washington University: $1.0M across 2 grants, latest 2023 The Simons Foundation Inc → Stony Brook Foundation: $500K across 1 grant, latest 2024 Rsf Social Finance Inc → Nuclear Information & Resource Service: $425K across 3 grants, latest 2024 Ploughshares Fund Inc → Arms Control Association: $394K across 2 grants, latest 2024 The Heising-Simons Foundation → University of Massachusetts Amherst: $196K across 2 grants, latest 2024 The Raymond Frankel Foundation → Us Pugwash: $140K across 4 grants, latest 2025 Effective Ventures Foundation USA Inc → Federation of American Scientists: $100K across 1 grant, latest 2021 Prospect Hill Foundation Inc → Carnegie Endowment for International Peace: $75K across 3 grants, latest 2023 John D and Catherine T Macarthur Foundation (Consolidated) → Henry L Stimson Center: $3.2M across 6 grants, latest 2023 Carnegie Corporation of New York → Federation of American Scientists: $1.0M across 2 grants, latest 2023 Gordon E and Betty I Moore Foundation → The Board of Trustees of the Leland Stanford Junior University: $900K across 2 grants, latest 2024 The Simons Foundation Inc → Stanford University: $452K across 2 grants, latest 2024 Ploughshares Fund Inc → Foreign Policy for America: $350K across 2 grants, latest 2024 Rsf Social Finance Inc → Southwest Research and Information Center: $260K across 3 grants, latest 2023 Bright Horizon Foundation → Carnegie Endowment for International Peace - for Nuclear Disarmament Effort: $150K across 1 grant, latest 2022 Prospect Hill Foundation Inc → Nuclear Age Peace Foundation: $65K across 4 grants, latest 2023 Effective Ventures Foundation USA Inc → The Nuclear Threat Initiative: $49K across 2 grants, latest 2024 John D and Catherine T Macarthur Foundation (Consolidated) → President and Fellows of Harvard College: $2.8M across 3 grants, latest 2023 John D and Catherine T Macarthur Foundation (Consolidated) → Carnegie Endowment for International Peace: $2.1M across 5 grants, latest 2023 John D and Catherine T Macarthur Foundation (Consolidated) → Board of Trustees of the Leland Stanford Junior University: $2.1M across 3 grants, latest 2022 John D and Catherine T Macarthur Foundation (Consolidated) → The University of British Columbia: $1.3M across 3 grants, latest 2022 John D and Catherine T Macarthur Foundation (Consolidated) → Royal Institute of International Affairs: $1.1M across 4 grants, latest 2023 John D and Catherine T Macarthur Foundation (Consolidated) → Ploughshares Fund Inc: $1.0M across 4 grants, latest 2021 Carnegie Corporation of New York → Massachusetts Institute of Technology: $962K across 8 grants, latest 2024 Carnegie Corporation of New York → Princeton University: $950K across 4 grants, latest 2023 Carnegie Corporation of New York → Center for Arms Control and Non-Proliferation: $862K across 5 grants, latest 2024 Carnegie Corporation of New York → International Institute for Strategic Studies: $820K across 4 grants, latest 2024 Gordon E and Betty I Moore Foundation → Colorado School of Mines: $800K across 3 grants, latest 2024 John D and Catherine T Macarthur Foundation (Consolidated) → Center for A New American Security Inc: $800K across 2 grants, latest 2021 John D and Catherine T Macarthur Foundation (Consolidated) → Truman Center for National Policy: $800K across 4 grants, latest 2023 Carnegie Corporation of New York → Carnegie Endowment for International Peace: $800K across 4 grants, latest 2024 John D and Catherine T Macarthur Foundation (Consolidated) → Brookings Institution: $750K across 2 grants, latest 2021 John D and Catherine T Macarthur Foundation (Consolidated) → Royal United Services Institute for Defence and Security Studies: $732K across 2 grants, latest 2021 Gordon E and Betty I Moore Foundation → Purdue University: $685K across 2 grants, latest 2024 Carnegie Corporation of New York → University of Maryland: $650K across 4 grants, latest 2024 John D and Catherine T Macarthur Foundation (Consolidated) → National Security Archive Fund Inc: $600K across 2 grants, latest 2021 John D and Catherine T Macarthur Foundation (Consolidated) → George Washington University: $600K across 2 grants, latest 2021 John D and Catherine T Macarthur Foundation (Consolidated) → Nautilus of America Inc: $600K across 2 grants, latest 2021 John D and Catherine T Macarthur Foundation (Consolidated) → The Council On Strategic Risks: $600K across 2 grants, latest 2023 John D and Catherine T Macarthur Foundation (Consolidated) → Third Way Institute: $600K across 2 grants, latest 2023 John D and Catherine T Macarthur Foundation (Consolidated) → Asiapacific Leadership Network for Nuclear Nonproliferation: $525K across 1 grant, latest 2021 John D and Catherine T Macarthur Foundation (Consolidated) → Asia Pacific Leadership Network for Nuclear Non Proliferation Disarmament: $525K across 1 grant, latest 2021 Carnegie Corporation of New York → Rethink Media: $500K across 2 grants, latest 2024 Gordon E and Betty I Moore Foundation → Trustees of Boston University: $492K across 2 grants, latest 2024 John D and Catherine T Macarthur Foundation (Consolidated) → King's College London: $475K across 3 grants, latest 2022 John D and Catherine T Macarthur Foundation (Consolidated) → Good Energy Collective Incorporated: $475K across 2 grants, latest 2023 Carnegie Corporation of New York → Northwestern University: $475K across 2 grants, latest 2024 John D and Catherine T Macarthur Foundation (Consolidated) → Hudson Institute Inc: $450K across 4 grants, latest 2023 Carnegie Corporation of New York → Wgbh Educational Foundation: $448K across 2 grants, latest 2024 John D and Catherine T Macarthur Foundation (Consolidated): $30M on this topic. Open the funder. John D and Catherine T Macart… $30M Carnegie Corporation of New York: $13M on this topic. Open the funder. Carnegie Corporation of New Y… $13M Peter G Peterson Foundation: $9.0M on this topic. Open the funder. Peter G Peterson Foundation $9.0M Gordon E and Betty I Moore Foundation: $7.8M on this topic. Open the funder. Gordon E and Betty I Moore Fo… $7.8M Bright Horizon Foundation: $3.1M on this topic. Open the funder. Bright Horizon Foundation $3.1M The Raymond Frankel Foundation: $2.2M on this topic. Open the funder. The Raymond Frankel Foundation $2.2M The Simons Foundation Inc: $2.0M on this topic. Open the funder. The Simons Foundation Inc $2.0M Effective Ventures Foundation USA Inc: $1.7M on this topic. Open the funder. Effective Ventures Foundation… $1.7M The Heising-Simons Foundation: $1.4M on this topic. Open the funder. The Heising-Simons Foundation $1.4M Rsf Social Finance Inc: $1.4M on this topic. Open the funder. Rsf Social Finance Inc $1.4M Ploughshares Fund Inc: $1.2M on this topic. Open the funder. Ploughshares Fund Inc $1.2M Prospect Hill Foundation Inc: $280K on this topic. Open the funder. Prospect Hill Foundation Inc $280K Nuclear Threat Initiative Inc: received $9.0M on this topic Nuclear Threat Initiative Inc $9.0M Nuclear Threat Initiative Inc: received $7.3M on this topic Nuclear Threat Initiative Inc $7.3M President and Fellows of Harvard College: received $3.9M on this topic President and Fellows of Harvar… $3.9M President and Fellows of Middlebury College: received $3.5M on this topic President and Fellows of Middle… $3.5M Henry L Stimson Center: received $3.2M on this topic Henry L Stimson Center $3.2M National Security Archive Fund Inc: received $3.0M on this topic National Security Archive Fund… $3.0M Carnegie Endowment for International Peace: received $3.0M on this topic Carnegie Endowment for Internat… $3.0M President and Fellows of Harvard College: received $2.8M on this topic President and Fellows of Harvar… $2.8M Board of Trustees of the Leland Stanford Junior University: received $2.1M on this topic Board of Trustees of the Leland… $2.1M American Academy of Arts and Science: received $2.0M on this topic American Academy of Arts and Sc… $2.0M Nuclear Threat Initiative: received $2.0M on this topic Nuclear Threat Initiative $2.0M Council On Strategic Risks: received $1.6M on this topic Council On Strategic Risks $1.6M The University of British Columbia: received $1.3M on this topic The University of British Colum… $1.3M California Institute of Technology: received $1.2M on this topic California Institute of Technol… $1.2M Royal Institute of International Affairs: received $1.1M on this topic Royal Institute of Internationa… $1.1M Ploughshares Fund Inc: received $1.0M on this topic Ploughshares Fund Inc $1.0M Federation of American Scientists: received $1.0M on this topic Federation of American Scientis… $1.0M Stony Brook Foundation Inc: received $1.0M on this topic Stony Brook Foundation Inc $1.0M Ploughshares Fund: received $1.0M on this topic Ploughshares Fund $1.0M Washington University: received $1.0M on this topic Washington University $1.0M Massachusetts Institute of Technology: received $962K on this topic Massachusetts Institute of Tech… $962K Princeton University: received $950K on this topic Princeton University $950K The Board of Trustees of the Leland Stanford Junior University: received $900K on this topic The Board of Trustees of the Le… $900K Center for Arms Control and Non-Proliferation: received $862K on this topic Center for Arms Control and Non… $862K International Institute for Strategic Studies: received $820K on this topic International Institute for Str… $820K Colorado School of Mines: received $800K on this topic Colorado School of Mines $800K Center for A New American Security Inc: received $800K on this topic Center for A New American Secur… $800K Truman Center for National Policy: received $800K on this topic Truman Center for National Poli… $800K Brookings Institution: received $750K on this topic Brookings Institution $750K Royal United Services Institute for Defence and Security Studies: received $732K on this topic Royal United Services Institute… $732K Beyond Nuclear: received $704K on this topic Beyond Nuclear $704K Purdue University: received $685K on this topic Purdue University $685K University of Maryland: received $650K on this topic University of Maryland $650K George Washington University: received $600K on this topic George Washington University $600K Nautilus of America Inc: received $600K on this topic Nautilus of America Inc $600K The Council On Strategic Risks: received $600K on this topic The Council On Strategic Risks $600K Third Way Institute: received $600K on this topic Third Way Institute $600K Asiapacific Leadership Network for Nuclear Nonproliferation: received $525K on this topic Asiapacific Leadership Network… $525K Asia Pacific Leadership Network for Nuclear Non Proliferation Disarmament: received $525K on this topic Asia Pacific Leadership Network… $525K Stony Brook Foundation: received $500K on this topic Stony Brook Foundation $500K Rethink Media: received $500K on this topic Rethink Media $500K Trustees of Boston University: received $492K on this topic Trustees of Boston University $492K King's College London: received $475K on this topic King's College London $475K Good Energy Collective Incorporated: received $475K on this topic Good Energy Collective Incorpor… $475K Northwestern University: received $475K on this topic Northwestern University $475K President and Fellows of Middlebury College: received $455K on this topic President and Fellows of Middle… $455K Stanford University: received $452K on this topic Stanford University $452K Hudson Institute Inc: received $450K on this topic Hudson Institute Inc $450K Wgbh Educational Foundation: received $448K on this topic Wgbh Educational Foundation $448K Nuclear Information & Resource Service: received $425K on this topic Nuclear Information & Resource… $425K Arms Control Association: received $394K on this topic Arms Control Association $394K Foreign Policy for America: received $350K on this topic Foreign Policy for America $350K Southwest Research and Information Center: received $260K on this topic Southwest Research and Informat… $260K Federation of American Scientists: received $240K on this topic Federation of American Scientis… $240K University of Massachusetts Amherst: received $196K on this topic University of Massachusetts Amh… $196K Carnegie Endowment for International Peace - for Nuclear Disarmament Effort: received $150K on this topic Carnegie Endowment for Internat… $150K Us Pugwash: received $140K on this topic Us Pugwash $140K Carnegie Endowment for International Peace: received $75K on this topic Carnegie Endowment for Internat… $75K Nuclear Age Peace Foundation: received $65K on this topic Nuclear Age Peace Foundation $65K The Nuclear Threat Initiative: received $49K on this topic The Nuclear Threat Initiative $49K 12 funders, 60 recipients, grants matching “nuclear” only. Ribbon width is proportional to the total given; each funder has its own colour (smaller funders in gray). Hover a name to isolate its flows, click a funder to open it. Drag to move around; zoom with the buttons, a double-click, or the wheel after clicking the map. Largest: $400,000 to Natural Resources Defense Council Inc — as a one-time only grant for a study on u.s. nuclear targeting in a multipolar nuclear environment
Full grant history → IRS filings ↗
Largest: $525,000 to Asia Pacific Leadership Network for Nuclear Non Proliferation Disarmament — in support of strengthening apln's capacity to reduce and eliminate nuclear threats
Full grant history → IRS filings ↗
Largest: $157,500 to WIN WITHOUT WAR EDUCATION FUND — 1. to mobilize a broad base of public support for progressive foreign policies, including nuclear nonproliferation, denuclearization, and diplomacy with nuclear-armed states.2. to …
Full grant history → IRS filings ↗
Largest: $3.0M to NUCLEAR THREAT INITIATIVE INC — to support nti's effort to improve global nuclear security through research on nuclear materials security and the engagement and development of leadership networks of nuclear exper…
Full grant history → IRS filings ↗
Largest: $302,050 to COLORADO SCHOOL OF MINES — to search for new physics in the fundamental symmetries of nature through the precision detection of ultra-low-energy nuclear recoils generated from nuclear beta decay using superc…
Full grant history → IRS filings ↗
Largest: $55,000 to ALLIANCE FOR NUCLEAR ACCOUNTABILITY — for the nuclear ban treaty campaign
Full grant history → IRS filings ↗
Largest: $35,000 to FEDERATION OF AMERICAN SCIENTISTS — nuclear information project
Full grant history → IRS filings ↗
Largest: $500,000 to STONY BROOK FOUNDATION — stony brook university center for foundations of nuclear science
Full grant history → IRS filings ↗
Largest: $602,000 to AMERICAN ACADEMY OF ARTS AND SCIENCE — to create dialogue between nuclear players
Full grant history → IRS filings ↗
Largest: $1.0M to NUCLEAR THREAT INITIATIVE — nonpartisan global security organization focused on reducing nuclear and biological threats imperiling humanity
Full grant history → IRS filings ↗
Largest: $1.6M to COUNCIL ON STRATEGIC RISKS — growing the council on strategic risks' nuclear security policy development and engagement with decision-makers
Full grant history → IRS filings ↗
Largest: $99,407 to UNIVERSITY OF MASSACHUSETTS AMHERST — for the cold molecule nuclear time-reversal experiment (centrex) search for nuclear symmetry violation
Full grant history → IRS filings ↗
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Source: IRS Form 990-PF Part XV and Form 990 Schedule I, tax years 2019–2025. These are grants already paid, a record of what an organization funds rather than an open call. Private foundations rarely accept unsolicited applications and the route in is usually a program officer; grantmaking charities and associations more often run real application cycles, so check their website. How this data is built, and its limits →
