TNS
TNS is an abbreviation for:
- Taylor Nelson Sofres , UK research company
- The New Saints FC , Welsh football club
- Théâtre national de Strasbourg , state theater in Strasbourg
- Transparent Network Substrate , a protocol for data traffic with an Oracle server
- Triple Nine Society , a gifted association
TN-S stands for:
- a type of protective earthing in the low-voltage area, see TN system # TN-S system
