'''IRF''' may refer to:
==General== *Impulse response function *Inertial reference frame *Information Retrieval Facility *Initial Reaction Force or Internal Response Force *Immediate Response Force *Institute of Space Physics (Sweden), (Institutet för rymdfysik) *Interferon regulatory factor (e.g. IRF6) *International Rectifier, New York Stock Exchange symbol IRF
==Foundations/organizations== *International Ranger Federation *International Rabbinic Fellowship *International Rogaining Federation *Islamic Research Foundation *International Rafting Federation *International Ringette Federation
==Computing== *Intelligent Resilient Framework, Virtual Switch Chassis Aggregation
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