• ICI programming language, a computer programming language developed in 1992
• Ici (magazine), an alternative weekly newspaper in Montreal, Canada

ICI is also an abbreviation which may mean:

• Imperial Chemical Industries, a British chemical company
• Industrial, commercial, and investment real estate, or simply, commercial real estate
• Industrial Control Integrator, an industrial automation company
• Institute for Competitive Intelligence, a German post-graduate training organization
• Instituto de Cooperación Iberoamericana
• Inter-Channel-Interference
• Interface Control Information, a header used for layers in the OSI model
• International Commerce Institute, a high school in Phoenix, Arizona, United States
• International Commission on Illumination; more commonly abbreviated CIE, following its French spelling
• Internet Computer Integration Project
• Intracervical Insemination
• Investment Company Institute, an American investment company trade organization
• Istanbul Cooperation Initiative, an initiative launched during NATO's 2004 Istanbul Summit.
• Financing Instrument for Cooperation with Industrialised and Other High Income Countries and Territories, an instrument of the European Union
• International Compact with Iraq