| Acronym | Definition |
|---|
| NDU | National Defense University |
| NDU | Nippon Dental University (Japan) |
| NDU | Network Device Utility |
| NDU | Notre Dame University |
| NDU | National Democratic Union (Armenia) |
| NDU | Non Disruptive Upgrade |
| NDU | Naval Diving Unit (Singapore) |
| NDU | Navigation Data Unit |
| NDU | Nordisk Data Union |
| NDU | No Data Update |
| NDU | Navigation Distribution Unit |
| NDU | Norsk Dysmeliforenings Ungdom (Norwegian Dysmelia Youth Association) |
| NDU | Norges Døveforbunds Barne - og Ungdomsutvalg (Norwegian Youth Association of the Deaf) |
| NDU | Newrybar Drainage Union (New South Wales, Australia) |
| NDU | Network Distribution Unit (computer networking) |