NSSK
| Acronym | Definition |
|---|---|
| NSSK | North-South Station-Keeping (satellite maneuver) |
| NSSK | Norsk Shetland Sheepdog Klubb (Norwegian: Norwegian Shetland Sheepdog Club; Norway) |
| NSSK | Nederlandse Studenten Snowboard Kampioenschappen (Dutch: Dutch Students Snowboard Championships) |
| NSSK | Node-Specific-Secret-Key |