RFX

RFX may refer to:

• Reversed-Field eXperiment, a reversed field pinch nuclear fusion device
• The collective term for a request for information (RFI), request for proposal (RFP), or request for quotation (RFQ)
• J P Hunt Air Carriers (ICAO airline code: RFX) aka REFLEX, U.S. airline: see List of airline codes (J)
• The regulatory factor X (RFX) gene and protein family:
  • RFX1 gene and protein
  • RFX2 gene and protein
  • RFX3 gene and protein
  • RFX4 gene and protein
  • RFX5 gene and protein
  • RFX6 gene and protein