Michael Weinstein may refer to:

• Mike Weinstein (born 1949), Member of the Florida House of Representatives
• Michael H. Weinstein (born 1960), Swiss composer
• Michael L. Weinstein, former U.S. Air Force officer, founder of the Military Religious Freedom Foundation
• Michael A. Weinstein (1942–2015), American political philosopher and political scientist
• AIDS Healthcare Foundation, founded by Michael Weinstein

• National Integration Center
• National Integration Council
• National Integration Council of India
• National Intelligence Agency
• National Intelligence Agency (disambiguation)
• National Intelligence and Security Agency
• National Intelligence and Security Service
• National Intelligence Assesments on Infectious Diseases
• National Intelligence Assessments on Infectious Diseases
• National Intelligence Cross
• National Intelligence Directorate (Pakistan)
• National Intelligence Exceptional Achievement Medal
• National Intelligence Meritorious Unit Citation
• National Intelligence Open Source Committee
• National Intelligence Priorities Framework
• National Intelligence Reform Medal
• National Intelligence Secretariat (Ecuador)
• National Intelligence Service (Kenya)
• National Intelligence Superior Service Medal
• National Interagency Confederation for Biological Research
• National Intercollegiate Band
• National Intercollegiate Running Club Association
• Nationalinterest.org
• National Interest Picture Productions
• National Interfaith Council