| Acronym | Definition |
|---|
| SNO | Sudbury Neutrino Observatory |
| SNO | Social Network Optimization |
| SNO | School Number One (Russia) |
| SNO | Sakon Nakhon, Thailand (Airport Code) |
| SNO | Strategic Network Optimization (software) |
| SNO | Simultaneous Nadir Overpass (climate study) |
| SNO | Satellite Network Operator |
| SNO | Second Network Operator |
| SNO | Società dei Neurologi, Neurochirurghi e Neuroradiologi Ospedalieri (Italy) |
| SNO | Scienze Neurologiche Ospedaliere |
| SNO | Société Nautique de l'Oise (France) |
| SNO | Senior National Officer |
| SNO | Sport Nautique de l'Ouest (France: Water Sports West) |
| SNO | Statement of No Objection |
| SNO | Saturday Night Oldies (radio show) |
| SNO | Subject Named Officer |
| SNO | System Node Opérator |
| SNO | Senior Noncommissioned Officer |
| SNO | Spin Natural Orbital |
| SNO | Senior Neighborhood Officer (Oregon) |
| SNO | Special Naval Operation |
| SNO | Student Nurse's Organization (various locations) |
| SNO | Scuderia Non Originale (Italian car club; California; est. 2004) |