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NIH Small Research Grant Program

Supports short United States investigator projects through NIH small research pathways for focused feasibility work and clear pilot results.

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The NIH Small Research Grant Program (R03) is the National Institutes of Health's small, investigator-initiated route for discrete research projects. Under parent announcement PA-25-302, it supports short, focused studies and excludes clinical trials.

The mechanism is designed for up to two years, with standard due dates in February, June, and October for new applications. It is active through Ja…

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Each grant below is a distinct funding opportunity with its own eligibility, scope, and deliverables.

Last verified: 26 May 2026Source: grants.nih.gov