NIH funding opportunities by activity code

545 NIH funding notices are open or forecast. Find them by activity code: R01 and R21 research grants, K career awards, F fellowships, T32 training.

Every NIH notice names its activity code: the kind of award, such as a research project, a career development award or a training grant. The code tells you who can lead the project, how long it runs and how it is reviewed.

Research grants

R series: research projects, from small and exploratory grants to R01s and small business awards.

Code	Award	Open or forecast	Closed since 2021
R00	Research Transition Award	9	39
R01	Research Project Grant	78	616
R03	Small Grant	15	72
R13	Support for Conferences and Scientific Meetings	3	4
R15	Research Enhancement Award	9	9
R16	Support for Research Excellence	4	5
R18	Research Demonstration and Dissemination Project	2	2
R21	Exploratory/Developmental Research Grant	34	243
R24	Resource-Related Research Project	11	41
R25	Education Project	12	94
R33	Exploratory/Developmental Grant Phase II	39	143
R34	Planning Grant	15	97
R35	Outstanding Investigator Award	6	14
R36	See NIH's list	1	9
R37	See NIH's list	3	5
R38	Stimulating Access to Research in Residency	1	1
R41	Small Business Technology Transfer (STTR) Phase I	4	48
R42	Small Business Technology Transfer (STTR) Phase II	3	46
R43	Small Business Innovation Research (SBIR) Phase I	4	66
R44	Small Business Innovation Research (SBIR) Phase II	7	79
R50	Research Specialist Award	4	9
R61	Exploratory/Developmental Phase I	30	120
RC2	See NIH's list	1	10
RF1	See NIH's list	2	2
RL1	See NIH's list	1	0
RM1	Research Project with Complex Structure	11	19
RP1	See NIH's list	7	0

Cooperative agreements

U series: like research grants, but NIH staff are substantially involved in the work.

Code	Award	Open or forecast	Closed since 2021
U01	Research Project Cooperative Agreement	47	313
U10	See NIH's list	0	5
U18	See NIH's list	1	0
U19	Research Program Cooperative Agreement	7	39
U24	Resource-Related Research Project Cooperative Agreement	35	261
U2C	Resource-Related Research Multi-Component Projects and Centers Cooperative Agreement	6	19
U2R	See NIH's list	2	2
U34	Planning Cooperative Agreement	1	6
U42	Animal Model and Biological Materials Resource Cooperative Agreement	4	10
U43	See NIH's list	0	6
U44	See NIH's list	1	26
U45	Hazardous Waste Worker Health and Safety Training Cooperative Agreement	1	1
U54	Specialized Center Cooperative Agreement	9	69
UC2	See NIH's list	2	11
UE5	Education Project Cooperative Agreement	4	13
UF1	See NIH's list	2	1
UG1	Clinical Research Cooperative Agreement, Single Project	3	33
UG3	Exploratory/Developmental Phase I Cooperative Agreement	20	123
UG4	See NIH's list	2	0
UH2	Exploratory/Developmental Cooperative Agreement Phase I	1	11
UH3	Exploratory/Developmental Cooperative Agreement Phase II	22	137
UH4	See NIH's list	1	1
UL1	See NIH's list	1	1
UM1	Research Project with Complex Structure Cooperative Agreement	13	34
UM2	See NIH's list	1	5
UT2	See NIH's list	0	7

Career development awards

K series: protected time for researchers building a career, most of them with a mentor.

Code	Award	Open or forecast	Closed since 2021
K00	Postdoctoral Transition Award	3	18
K01	Mentored Research Scientist Career Development Award	6	36
K02	Independent Scientist Award	3	2
K07	Academic Career Development Award	1	2
K08	Mentored Clinical Scientist Research Career Development Award	4	8
K12	Institutional Career Development Program	7	21
K18	Research Career Enhancement Award	3	17
K22	Career Transition Award	7	25
K23	Mentored Patient-Oriented Research Career Development Award	4	5
K24	Midcareer Investigator Award in Patient-Oriented Research	3	2
K25	Mentored Quantitative Research Development Award	3	2
K26	See NIH's list	1	1
K32	See NIH's list	2	0
K38	See NIH's list	2	1
K43	Emerging Global Leader Award	3	3
K76	See NIH's list	2	3
K99	Pathway to Independence Award	7	33
KC1	See NIH's list	1	0
KR1	See NIH's list	1	0
KS1	See NIH's list	1	0
KT1	See NIH's list	1	0

Fellowships

F series: individual research training for graduate students and postdocs.

Code	Award	Open or forecast	Closed since 2021
F30	Individual Predoctoral NRSA for MD/PhD and Other Dual Degree Fellowships	4	3
F31	Ruth L. Kirschstein Predoctoral Individual NRSA	3	5
F32	Ruth L. Kirschstein Postdoctoral Individual NRSA	5	8
F33	Ruth L. Kirschstein Senior Fellowship	1	1
F99	Predoctoral to Postdoctoral Transition Award	4	17

Training and education grants

T and D series: institutional research training programs.

Code	Award	Open or forecast	Closed since 2021
D43	International Research Training Grant	4	9
DP1	NIH Director's Pioneer Award	4	18
DP2	NIH Director's New Innovator Award	4	12
DP5	See NIH's list	2	7
T15	Continuing Education Training Grant	1	1
T1D	See NIH's list	1	9
T32	Institutional Research Training Grant	7	26
T34	Undergraduate NRSA Institutional Research Training Grant	2	6
T35	Short-Term Institutional Research Training Grant	2	2

Program projects and centers

P series: several related projects or shared facilities under one award.

Code	Award	Open or forecast	Closed since 2021
P01	Research Program Project Grant	4	31
P20	Exploratory Grant	5	13
P2C	See NIH's list	1	5
P30	Center Core Grant	17	41
P40	See NIH's list	1	2
P41	Biotechnology Resource Grant	3	1
P42	Hazardous Substances Basic Research Grant	1	1
P50	Specialized Center Grant	6	37
P60	See NIH's list	0	5
PF5	See NIH's list	1	0
PL1	See NIH's list	1	0

Other awards

Director's awards, instruments, construction and other mechanisms.

Code	Award	Open or forecast	Closed since 2021
C06	Research Facilities Construction Grant	2	10
G13	See NIH's list	1	1
OT2	See NIH's list	1	1
S10	Shared Instrumentation Grant	3	13
S15	See NIH's list	1	1
S21	See NIH's list	1	1
SB0	See NIH's list	1	0
SB1	See NIH's list	3	3
X01	Resource Access Award	8	16

Codes come from the notice titles on Grants.gov, which NIH writes as "(R21 Clinical Trial Not Allowed)". NIH's own activity code list has the full definitions.