AVX may refer to:

• Advanced Vector Extensions, an instruction set extension in the x86 microprocessor architecture
  • AVX2, an expansion of the AVX instruction set
  • AVX-512, 512-bit extensions to the 256-bit AVX
• Softwin AVX (AntiVirus eXpert), former name of Bitdefender

• Aviapaslauga (ICAO airline code AVX); see List of defunct airlines of Lithuania
• Aeroclub de Vitoria (ICAO airline code AVX); see List of airline codes (A)
• Catalina Airport (IATA airport code AVX), Avalon, Catalina Island, California, US

• AVX Corporation, a manufacturer of electronic parts and a division of Kyocera
• Avengers vs. X-Men, a comic book event

• UltraAVX
• All pages with titles beginning with AVX
• All pages with titles containing AVX