Pio (surname)
Pio is the surname of:
- Angelo Piò, Italian sculptor
- Antonio Pio (composer), Italian composer
- Antonio Pio (painter), Italian painter
- Domenico Piò, Italian sculptor, son of Angelo Piò
- Emmanuel Pío, Argentine footballer
- Iørn Piø, Danish folklorist, historian and archivist
- Louis Pio, one of the founders of the organized worker's movement in Denmark and principal founder of the Danish Social Democratic Party
- Teodoro Pio, Italian Roman Catholic bishop