Pio may refer to: Places Pio Lake, Italy Pio Island, Solomon Islands Pio Point, Bird Island, south Atlantic Ocean People Pio (given name) Pio (surname) Pio (footballer, born 1986), Brazilian footballer Pio (footballer, born 1988), Brazilian footballer PIO Programmed input–output, a method of computer data transmission Public information officer of a government department Person of Indian Origin not living in India Pilot-induced oscillation, an undesirable phenomenon in aircraft control Other uses Pio, prefix of 250 octets, a unit of information in computer science See also Pi O or П. O., Greek-Australian poet born 1951