- ACLU of the National Capital Area
 - Alliance for Justice
- Nationally-based coalition dedicated to ensuring access to justice, strengthening the public interest community and fostering the next generation of advocates.
- American Antitrust Institute
- Independent, nonprofit organization engaged in research, education, and advocacy, promoting laws, policies, and institutions favorable to competition.
- American Inns of Court
- Alexandria - A national organization dedicated to promoting ethics and professionalism in the American legal profession.
- Center for Individual Rights
- Nonprofit public interest law firm and a tax exempt organization working for the defence of individual rights, broadly understood to encompass civil rights and economic liberty.
- Center for Intellectual Property and Copyright in the Digital Environment
- Adelphi - Provides resources and workshops for the higher education community on IP and copyright in the digital environment.
- Environmental Law Institute (ELI)
- Internationally recognized, independent research and education centre working to advance environmental protection by improving law, policy, and management.
- HALT
- Organization of Americans for legal reform. Seeks to improve the quality, reduce the cost, and increase the accessibility of the civil legal system.
- Institute for Justice
- Libertarian public interest law firm that advances economic liberty, private property, school choice, and free speech, representing individuals whose rights are denied by government.
- International Law Institute
- Scholarly research, publishing, and practical legal training and technical assistance on many aspects of international legal and economic policy and practice.
- National Legal Center for the Public Interest
- Nonpartisan, educational and public service foundation concerned with issues of public policy which relate to law or to the administration of justice.
- National Whistleblower Center
- Advocates the right of employees to blow the whistle on fraud, corruption, government waste, and violations of environmental laws.
- People For The American Way
- Working to engage more Americans in civic and political action, to defend and strengthen vital institutions. Founded by Emmy award-winning producer Norman Lear.
- Washington Legal Foundation (WLF)
- Nonprofit legal group that publishes and litigates to promote free enterprise legal principles.
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