Daniel Rainey is the Director of the Office of Alternative Dispute Resolution Services (ADRS) for the National Mediation Board, and he is the agency's Ombudsman. He joined the NMB in April, 2001.

As Director, ADRS, he is responsible for a range of programs and projects involving work with parties in the airline and railroad industries, and cooperation with and support for the Board Members and all of the other NMB departments. The Programs for which he is responsible include: the NMB’s Alternative Dispute Resolution (ADR) Program, the NMB's Research Program, the NMB’s Public Information/Public Affairs Program, the NMB’s Documents and Records Management Program, and the NMB’s Information Technology Program.

Immediately prior to coming to the NMB, Mr. Rainey was the owner/president of a consulting firm specializing in conflict management and conflict intervention. From 1978 through 1990, he was a faculty member and administrative faculty member at George Mason University.

His memberships and associations include: The Association for Conflict Resolution (Online Dispute Resolution Section Co-Chair), the American Bar Association Section of Dispute Resolution, the Association of Labor Relations Agencies (Technology and Communications Committee Member), the International Ombudsman Association, the InternetBar.org (an online dispute resolution organization addressing issues of justice involving cyber-law and cyber-transactions), the Center for Information Technology and Dispute Resolution (Fellow of the Center), the National Center for Technology and Dispute Resolution (Co-Chair of the Center Advisory Board), and the Conflict Resolution Quarterly Editorial Board. He is an adjunct faculty member for the University of Massachusetts at Amherst and Southern Methodist University.