Welcome to the MacArthur Foundation Grants Portal

The John D. and Catherine T. MacArthur Foundation supports creative people, effective institutions, and influential networks building a more just, verdant, and peaceful world. MacArthur is placing a few big bets that truly significant progress is possible on some of the world's most pressing social challenges, including over-incarceration, global climate change, nuclear risk, and significantly increasing financial capital for the social sector. In addition to the MacArthur Fellows Program, the Foundation continues its historic commitments to the role of journalism in a responsible and responsive democracy, as well as the strength and vitality of our headquarters city, Chicago.

MacArthur is one of the nation's largest independent foundations. Organizations supported by the Foundation work in about 50 countries. In addition to Chicago, MacArthur has offices in India, Mexico, and Nigeria.

MacArthur develops grantmaking strategies designed to meet very specific goals. We encourage you to closely read information about each program to determine whether your project falls within MacArthur’s grantmaking guidelines. Please note that the Foundation awards the majority of its grants to organizations identified by our staff. Each year we also award grants to individuals through the MacArthur Fellows program, which does not accept applications or nominations. To learn more about the MacArthur Foundation visit our web site, at, read our FAQs, view our annual report, and review the application guidelines for the areas of work for which you are interested in applying.

If you do not have a login, you may start the application process by clicking on the "Submit a New Idea" button and take our eligibility quiz.

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