| 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 |