American Political Science Association (APSA) 
http://www.apsanet.org/
The leading professional organization for the study of political science that seeks to expand awareness and understanding of politics.

American Society for Public Administration (ASPA)
http://www.aspanet.org
The largest and most prominent professional association in public administration that seeks to advance excellence in public service.

Association for Public Policy Analysis and Management (APPAM)
http://www.appam.org/
An organization dedicated to improving public policy and management by fostering excellence in research, analysis, and education.

International City/County Management Association (ICMA)
http://www.icma.org
ICMA is the professional organization for chief appointed managers, administrators, and assistants in cities, towns, counties, and regional entities throughout the world.

International Personnel Management Association for Human Resources (IPMA)
http://www.ipma-hr.org/
The organization that represents the interests of over 5,000 human resource professionals at the Federal, state, and local levels of government. 

National Academy of Public Administration (NAPA)
http://www.napawash.org
An organization dedicated to improving the performance of governance systems- the network of public institutions, nonprofit organizations and private companies that share in implementation of public policy.

National Forum for Black Public Administrators (NFBPA) 
http://www.nfbpa.org/
An organization committed to strengthening the position of Blacks within the field of public administration.