NVN is a three-letter acronym (TLA) that normally stands for North Vietnam.
It may also represent:
- the stock symbol for Nventa Biopharmaceuticals Corporation on the Toronto Stock Exchange
- the station code for the Newhaven Town railway station in England
- the stock symbol for Nuveen New York Select Quality Municipal Fund on the New York Stock Exchange
- the National Videotex Network, a defunct online service provider
- the Netsocket Virtual Network is an SDN framework for network virtualization and advanced automation - www.netsocket.com