| NDSO | Nasolacrimal Drainage System Obstruction 
| Others |
| NDSO | National Database on Sexual Offenders
| Others |
| NDSO | National Democratic Student Organization
| Others |
| NDSO | National Disability Sport Organisations
| Others |
| NDSO | National Disability Sports Organisations
| Others |
| NDSO | National Down Syndrome Organization
| Others |
| NDSO | National Drug Service Organisation
| Others |
| NDSO | National Drug Service Organization
| Others |
| NDSO | National Drugs Services Organisation
| Others |
| NDSO | Native Data Store Object
| Others |
| NDSO | Nautilus Deep Space Observatory
| Others |
| NDSO | Newcastle and District Society of Organists
| Others |
| NDSO | Nigerian Diaspora Students Organization
| Others |
| NDSO | Nile Development and Services Organization
| Others |
| NDSO | Nissan Diesel Sales Operation
| Others |
| NDSO | Non Dominant Side Onset
| Others |
| NDSO | Northern Dutchess Symphony Orchestra
| Others |
| NDSO | Notice Debarment and Suspension Official
| Others |
| NDSO | Notre Dame Symphony Orchestra
| Others |