Fly wire, Fly-wire, Flywire or Fly Wire may refer to:

• Flywire (company), a former unicorn startup company
• Flywire (screen), a window screen of wire gaze
• Flywire (thread), a special thread construction used in sneaker manufacturing by Nike
• Fly-wire (wire), an enameled wire for circuit patching

• Flying wire
• Fly by wire (disambiguation)
• Jumper wire
• Wrap wire