INF may stand for:

• Interferon, cytokine produced by the cells of the immune systems
• International Naturist Federation
• International Nepal Fellowship
• Intermediate-Range Nuclear Forces Treaty, also known as the INF Treaty
• Infinity
• Irish National Federation
• Infimum, for which the mathematical abbreviation is inf
• Informatics, the science of information and the practice of information processing
• INF file, a file extension (information file) used by software and hardware driver installation routines

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