Monthly deadline index

Federal Grant Deadlines in May 2026

Use this monthly deadline index to scan active grants scheduled to close in May 2026. It is built for teams planning submissions around a specific month rather than a single week.

Active now
92
Deadlines in this window
Window
May 1, 2026
through May 31, 2026

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Current deadline list

Prioritize the shortest windows first, then open the full grant record for eligibility notes, funding ranges, and application detail.

Showing 25-48 of 92
Closes in 49 daysNational Institutes of HealthDiscretionary

Pilot Studies of Biological, Behavioral and Social Mechanisms Contributing to HIV Pathogenesis Within the Mission of NIDDK (R21 Clinical Trial Not Allowed)

This Notice of Funding Opportunity (NOFO) invites applications for innovative basic and translational pilot research projects within the mission of the NIDDK that are aligned with NIH HIV/AIDS researc

Deadline
May 7, 2026
Award ceiling
Not specified
NOFO
PAR-25-068
Closes in 49 daysNational Institutes of HealthDiscretionary

Development and Testing of Novel Interventions to Improve HIV Prevention, Treatment, and Program Implementation for People Who Use Substances (R34 Clinical Trial Required)

This notice of funding opportunity (NOFO) encourages formative research, intervention development, and pilot-testing of interventions. Primary scientific areas of focus include the feasibility, tolera

Deadline
May 7, 2026
Award ceiling
Not specified
NOFO
PAR-24-329
Closes in 49 daysDARPA - Biological Technologies OfficeDiscretionary

Protean

This Research Announcement represents a solicitation for a research thrust, entitled Protean, that will focus on identifying novel ways to restore protein function to targets of chemical threat agents

Deadline
May 7, 2026
Award ceiling
Not specified
NOFO
DARPARA2601
Closes in 50 daysNational Park ServiceDiscretionary

FY2025 NAGPRA Repatriation Grants

The Native American Graves Protection and Repatriation Act of 1990 authorizes the Secretary of the Interior to make grants to museums, Indian Tribes, and Native Hawaiian organizations for the purposes

Deadline
May 8, 2026
Award ceiling
$25,000
NOFO
P25AS00474
Closes in 51 daysU.S. Mission to TunisiaDiscretionary

Alumni Engagement Innovation Fund (AEIF) 2026

The U.S. Embassy in Tunisia invites alumni of U.S. government-sponsored and facilitated exchange programs to apply for the 2026 Alumni Engagement Innovation Fund (AEIF 2026). Proposals must include te

Deadline
May 9, 2026
Award ceiling
$35,000
NOFO
PAS-TUNIS-FY2026
Closes in 53 daysBureau Of Educational and Cultural AffairsDiscretionary

FY 2026 Study of the U.S. Institutes for Scholars

The Office of Academic Exchange Programs, Bureau of Educational and Cultural Affairs (ECA), invites proposal submissions from U.S. public and private academic and cultural institutions, including comm

Deadline
May 11, 2026
Award ceiling
$1,500,000
NOFO
DFOP0017918