City School can refer to:

• The City School (Pakistan) in Pakistan
• City School (Vancouver), an alternative program in King George Secondary School in Vancouver, British Columbia, Canada

• Institute for Ethics and Emerging Technologies
• Institute for Evolutionary Anthropology
• Institute for Fiscal Studies
• Institute for Food and Development Policy
• Institute for Genomic Research
• Institute for Global Communications
• Institute for Historical Review
• Institute for Humane Studies
• Institute for Humanist Studies
• Institute for International Assistance and Solidarity
• Institute for International Research
• Institute for Justice
• Institute For Justice
• Institute for Logic, Language and Computation
• Institute for Nuclear Studies
• Institute for OneWorld Health
• Institute for Pacific Relations
• Institute for Physical Problems
• Institute For Policy Studies
• Institute for Policy Studies
• Institute for Propaganda Analysis
• Institute for Public Affairs (Slovakia)
• Institute for Public Policy Research
• Institute for Research in Fundamental Sciences
• Institute for Research in Information and Scholarship