IRF

IRF is a three-letter acronym that stands for:

• Immature Reticulocyte Fraction
• Impulse response function
• Incident Reporting Form
• Information Retrieval Facility
• Initial Reaction Force or Immediate Response Force
• Inpatient Rehabilitation Facility
• Institute of Space Physics (Sweden)
• Instructional Reform Facilitator (San Francisco Unified Schools)
• Intelligence Records Facility
• Interchange Reimbursement Fee
• Interest Rate Future
• Interference Rejection Factor
• Interferon Regulatory Factor (e.g. IRF6)
• International Rectifier

In foundations/organizations:

• International Rabbinic Federation
• International Ranger Federation
• International Road Federation
• International Rogaining Federation
• Iran Research Foundation
• Islamic Research Foundation

In computing:

• Intelligent Resilient Framework, Virtual Switch Chassis Aggregation
• Inherited Rights Filter, a logical access constraint in Novell NetWare