| Acronym | Definition |
|---|
| ONS➣Om Namah Shivaya (meditation chant) |
| ONS➣Office for National Statistics (UK) |
| ONS➣One Night Stand |
| ONS➣Old North State |
| ONS➣Onslaught (Unreal Tournament 2004) |
| ONS➣Operador Nacional do Sistema Eletrico (Brazil) |
| ONS➣Oncology Nursing Society |
| ONS➣Office of Nuclear Safety |
| ONS➣Offshore Northern Seas |
| ONS➣Occipital Nerve Stimulation (migraine treatment) |
| ONS➣Onboard Navigation System |
| ONS➣Oral Nutritional Supplement |
| ONS➣Operational Navigation Chart |
| ONS➣Orchestra of New Spain (Dallas, TX) |
| ONS➣Optical Networking System |
| ONS➣Object Naming Service |
| ONS➣Operational Needs Statement |
| ONS➣Office of Nursing Services (US VA) |
| ONS➣OMEGA Navigation System |
| ONS➣Optical Networking Services (Cisco) |
| ONS➣Optical Network Service |
| ONS➣Open Network Services |
| ONS➣One-Name Study (genealogy) |
| ONS➣Office of Neighborhood Services (various locations) |
| ONS➣Oulu Nice Soccer (female soccer team; Oulu, Finland) |
| ONS➣Open Networking System |
| ONS➣Oriental Numismatic Society |
| ONS➣Odyssey Nail Systems |
| ONS➣Observatoire National de la Sécurité et de l'Accessibilité des Établissements d'Enseignement (French: National Observatory for Safety and Accessibility of Educational Institutions) |
| ONS➣Order of Nova Scotia |
| ONS➣On Premise Station |
| ONS➣Onset Constraint |
| ONS➣Office of NATO Standardization |
| ONS➣Organized Neighbors of Summerhill (Atlanta, GA) |
| ONS➣Liverpool to Halifax Slow (routing designation; US Navy) |
| ONS➣Online Needlework Shop |