Office of the Director (OD)
- Office of Management (OM)
- Executive Office
- Freedom of Information and Privacy Act Branch
- Financial Management Branch
- Extramural Financial Analysis Section
- Management Services Branch (MSB)
- Management Analysis Section
- Workforce Development Section
- Administrative Management Branch
- Information Technology and Applications Center (ITAC)
- Office of the Director
- Information Technology Security Section
- Customer Support Branch
- Scientific Solutions Delivery Branch
- Business Solutions Delivery Branch
- Infrastructure Services Branch
- Office of Operations Management
- Ethics Office
- Program Management Office
- Office of Science Policy, Engagement, Education and Communications (OSPEEC)
- Engagement and Media Relations Branch
- Health Education and Digital Information Dissemination Branch
- Science Policy, Outreach, and Reporting Branch
Extramural Research Program
- Division of Cardiovascular Sciences (DCVS)
- Office of the Director
- Office of Biostatistics Research
- Office of Research Training and Career Development (ORTCD)
- Basic and Early Translational Research Program
- Program in Adult and Pediatric Cardiac Research
- Prevention and Population Sciences Program
- Women's Health Initiative Branch
- Jackson Heart Study
- Division of Lung Diseases (DLD)
- Office of the Director
- Airway Biology and Disease Branch
- Lung Biology and Disease Branch
- National Center on Sleep Disorders Research (NCSDR)
- Division of Blood Diseases and Resources (DBDR)
- Office of the Director
- Blood Epidemiology and Therapeutics Branch
- Molecular Cellular and Systems Blood Science Branch
- Translational Blood Science and Resources Branch
- Division of Extramural Research Activities (DERA)
- Office of the Director
- Office of Translational Alliances and Coordination
- Office of Committee Management
- Office of Acquisitions
- Office of Grants Management
- Office of Extramural Policy and Training
- Office of Scientific Review
- Referral Office
- National Education Programs Coordinated by the NHLBI
- Center for Translation Research and Implementation Science
- Office of the Director
- Translation Research Branch
- Implementation Science Branch
- Health Inequities and Global Health Branch
Intramural Research Program
- Division of Intramural Research (Labs at the NHLBI)
- Office of the Scientific Director
- Office of the Clinical Director
- Intramural Administrative Management Branch
- Animal Program
- Office of Education
- Scientific Information Office
- Office of Technology Transfer and Development (OTTAD)
- Biochemistry and Biophysics Center
- Cardiovascular and Pulmonary Branch
- Cell Biology and Physiology Center
- Center for Molecular Medicine
- Genetics and Developmental Biology Center
- Hematology Branch
- Immunology Center
- Population Sciences Branch
- Systems Biology Center