| Acronym | Definition |
|---|
| NSDU➣Network Layer Service Data Unit |
| NSDU➣Network Service Data Unit (SS7 SCCP) |
| NSDU➣Non-Stop Dual Unwinder (labels) |
| NSDU➣National Self-Determination Union (politics) |
| NSDU➣National Society Daughters of the Union (est. 1912; New Albany, IN) |
| NSDU➣National Systems Development Unit (US DOI) |