| Acronym | Sense | Language | Topics |
|---|---|---|---|
| CSN | Customer Source Number | In English | |
| ČSN | Českých Technických Norem | In Czech | → Standardization → Czech Republic |
| CSN | Congregation of The Sisters Of Nazareth | In English | → Roman catholic church |
| CSN | Coopérant du Service National | In French | → Labour, labour economics → Public administration, government |
| CSN | Commerce Services Network | In English | → Software → Trade |
| CSN | Confédération des Syndicats Nationaux (www.csn.qc.ca) | In French | → Organizations and associations → Labour, labour economics |