U.N. Agencies/Global Agencies:

The United Nations Refugee Agency (UNHCR)
The United Nations Children's Fund (UNICEF)
The United Nations Volunteers Programme (UNV)
World Health Organization (WHO)
International Committee of the Red Cross
International Rescue Committee
Directory of United Nations System Organizations

Non-Governmental Organizations (NGOs):

Health Volunteers Overseas
International Medical Volunteers Association
Human Rights Watch
European Council on Refugees and Exiles (ECRE)
Marie Stopes International
Medecins Sans Frontieres (MSF)
Doctors Without Borders
Physicians for Human Rights
CARE International
International Agency for Economic Development
Millennium Development Goal Indicators
Amnesty International
Global Health Council

U.S. Agencies:

Centers for Disease Control and Prevention (CDC)
National Institute for Occupational Safety and Health (NIOSH)
Division of Healthcare Quality Promotion (DHQP)
Healthcare Infection Control Practices Advisory Committee (HICPAC)
Centers for Medicare and Medicaid Services
National Institutes of Health
Food and Drug Administration
Health Resources and Services Administration
Agency for Healthcare Research and Quality
Occupational Safety and Health Administration
US Environmental Protection Agency 
The Joint Commission
Institute of Medicine
The National Institute of Allergy and Infectious Diseases (NIAID)

Comprehensive Resources:

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