VFI may stand for:

• Volunteers for Israel, an American non-profit organization that volunteers to do civilian work on Israeli Defense Force bases
• Voltage and Frequency Independent, a class of uninterruptible power supply

• Brunneria gracilis
• Brunneria longa
• Brunneria subaptera
• Brunner Island
• Brunner Island Power Plant
• Brunner Island Steam Electric Station
• Brunner Mine
• Brunner mine disaster
• Brunner Mine disaster
• Brunner Mine Distaster
• Brunner Pouter
• Brunner, Sebastian
• Brunner's Gland Adenoma
• Brunner's Mantis
• Brunner's Stick Mantis
• Brunner v. Ohio Republican Party
• Brunner von Wattenwyl
• Brunner-Winkle Bird
• Brunner-Winkle Bird A
• Brunner-Winkle "Bird" A
• Brunner-Winkle Bird B
• Brunnethorn
• Brunnette
• Brunnhuber
• Brunni