MSN is a web portal provided by Microsoft.
MSN may also refer to:
Microsoft
- MSN Dial-up, the Internet service provider (originally The Microsoft Network)
- Windows Live Messenger, once synonymous with 'MSN' in Internet slang
- List of services by MSN, a list that includes several services Microsoft has rebranded
Other
- Dane County Regional Airport (IATA airport code MSN) in Madison, Wisconsin
- Manufacturer's serial number, a unique identifier assigned by some manufacturers. The abbreviation is typically used by aircraft companies.
- Master of Science in Nursing
- Maquila Solidarity Network
- Medium spiny neuron
- Meeker Southern Railroad, which uses the reporting mark 'MSN'
- Meter serial number
- Mountaineer Sports Network, a former business identity of the West Virginia Radio Corporation
- Lionel Messi, Luis Suárez and Neymar, dubbed "MSN", the main attacking trident of Spanish football club FC Barcelona from 2014 to 2017
- MSN, the human gene which produces the moesin protein
- The National Sports Council of Malaysia, Majlis Sukan Negara Malaysia