NIH uses activity codes (e.g., R01, R43, etc.) to differentiate the wide variety of research-related programs we support. NIH Institutes and Centers (ICs) may vary in the way they use activity codes. Not all ICs accept applications for all types of grant programs and some apply specialized eligibility criteria. Look closely at funding opportunities to determine which ICs participate and the specifics of eligibility.
A comprehensive list of extramural grant and cooperative agreement activity codes is available, or you can search for specific codes below:
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The following groupings represent the main types of grant funding we provide:
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Research Grants
The following represent frequently used research grant programs. A comprehensive list of all activity codes is also available.
Activity Code | Information |
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NIH Research Project Grant Program (R01)
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NIH Small Grant Program (R03):
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NIH Support for Conferences and Scientific Meetings (R13 and U13)
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NIH Academic Research Enhancement Award (AREA)
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NIH Exploratory/Developmental Research Grant Award (R21)
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NIH Clinical Trial Planning Grant (R34) Program
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Small Business Technology Transfer (STTR)
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Small Business Innovative Research (SBIR)
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NIH High Priority, Short-Term Project Award (R56)
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U01 |
Research Project Cooperative Agreement
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Program Project/Center Grants (P series)
Program project/center grants are large, multi-project efforts that generally include a diverse array of research activities. The following represents the most frequently used programs. ICs may vary in the way they use these programs. A comprehensive list of all activity codes is also available.
Activity Code | Information |
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P01 |
Research Program Project Grant
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P20 |
Exploratory Grants
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P30 |
Center Core Grants
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P50 |
Specialized Center
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Resource Grants
The following represent some of the more frequently used types of grant programs that provide research-related support or access to resources. A comprehensive list of all activity codes is also available.
Activity Code | Information |
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R24 |
Resource-Related Research Projects
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R25 |
Education Projects
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X01 |
Resource Access Program
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Trans-NIH Programs
NIH supports a variety of broad-reaching programs that are trans-NIH in nature.
Activity Code | Information |
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NIH Blueprint for Neuroscience Research |
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Research Supplements to Promote Diversity in Health-Related Research |
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Administrative Supplements to Existing NIH Grants and Cooperative Agreements (Parent Admin Supp) |
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New and Early Stage Investigators (ESI) Policies |
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The Common Fund has been used to support a series of short term, exceptionally high impact, trans-NIH programs known collectively as the NIH Roadmap for Medical Research. As the Common Fund grows, and research opportunities and needs emerge in the scientific community, the portfolio of programs supported by the Common Fund will likely evolve to encompass a diverse set of trans-NIH programs, although the NIH Roadmap is likely to remain a central component. | |
NIH Basic Behavioral and Social Science Research Opportunity Network (OppNet) |
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Presidential Early Career Award for Scientists and Engineers (PECASE) |
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Stem Cell Information |
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CounterACT![]() |
Trans-NIH Countermeasures Against Chemical Threats (CounterACT) program |