Nessi is a surname. Notable people with the surname include:
- Antonio Nessi, Italian engraver, painter and photographer
- Giuseppe Nessi, Italian opera singer
- Lino Nessi, Paraguayan footballer
- Marzio Nessi, experimental physicist at CERN
See also
edit- NeSSI (New Sampling/Sensor Initiative), a global and open initiative sponsored by the Center for Process Analysis and Control
- Nessie (disambiguation)