LSN
LSN is an abbreviation for:
- State Office for Statistics Lower Saxony
- Lower Saxony State Swimming Association
- English large-scale NAT , another name for carrier-grade NAT , an IPv4 network design for address translation (NAT) at the provider level
- Local Security Network , a fire and intruder alarm bus system from Bosch Sicherheitssysteme GmbH
- engl. log sequence number , a sequential number for transaction logs in database systems
- State government of Saxony and the Saxon state parliament (license plate)