This is a Notice of Funding Opportunity (NOFO) for a Limited Competition that invites applications from eligible organizations to apply. Please see Section III. Eligibility for additional information. In accordance with NIH standard peer-review processes, the applications will be peer-reviewed, and only meritorious applications will be considered. The purpose of this NOFO is to solicit current or recently completed NHLBI K01, K08, K23, and K25 awardees for small grant support to expand their current research objectives or to branch out to a new study emerging from their K award research. This NOFO is intended to facilitate the transition to research independence for these NHLBI K awardees. Current NHLBI K01, K08, K23, and K25 awardees may apply for this R03 support starting in the third year of their K award Project Period. Recently completed NHLBI K01, K08, K23, and K25 award recipients are eligible to apply or resubmit A1 applications if the earliest potential R03 award start date is within two years of the end of their K award Project Period.The R03 grant mechanism supports research projects that can be completed within two years and with limited resources. These projects are expected to generate preliminary data to bolster a subsequent R01-equivalent application. Eligible projects include, but are not limited to, pilot or feasibility studies; proof of concept studies; secondary analysis of existing data; small, self-contained research projects; development of new research methodologies or technologies, or creation of novel experimental model systems.Applicants are required to maintain a minimum of 40% protected research effort during the R03 award period. This requirement can be fulfilled through a combination of effort on the proposed R03 project and other research projects, irrespective of funding source.For current and former K23 awardees, the research proposed in the R03 application may or may not include patient-oriented research.
Limited Competition: Small Grant Program for NHLBI K01/K08/K23/K25 Recipients (R03 Clinical Trial Optional)
National Institutes of Health lists this opportunity for nonprofit applicant type listed. Review the coded eligibility, award range, source synopsis, and official notice before deciding whether to apply.
Deadline
November 7, 2028
748 days remaining
Award range
up to $85,000
$3,900,000 estimated program funding
Applicant signal
Nonprofit applicant type listed
the official notice controls eligibility
- 00 — State governments
- 01 — County governments
- 02 — City or township governments
- 04 — Special district governments
- 05 — Independent school districts
- 06 — Public and state-controlled institutions of higher education
- 07 — Federally recognized Native American tribal governments
- 08 — Public housing authorities and Indian housing authorities
- 11 — Native American tribal organizations other than federally recognized tribal governments
- 12 — 501(c)(3) nonprofits other than institutions of higher education
- 13 — Nonprofits without 501(c)(3) status other than institutions of higher education
- 20 — Private institutions of higher education
- 22 — For-profit organizations other than small businesses
- 23 — Small businesses
- 25 — Other applicants; see the official eligibility clarification
These are high-level Grants.gov codes. Additional eligibility text, geographic restrictions, and program-specific rules in the official notice can narrow them.
- Confirm entity eligibility in the full Notice of Funding Opportunity.
- Check SAM.gov and Grants.gov registration requirements and timing.
- Read every attachment for matching, cost-share, geography, and award conditions.
- Verify the exact deadline time and any agency-specific submission portal.
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Source: Grants.gov daily XML extract, 2026-10-21 extract. This page reproduces selected public listing fields for research convenience. The official Notice of Funding Opportunity and agency instructions control. This product uses the Grants.gov API but is not endorsed or certified by the U.S. Department of Health and Human Services.