SGN

SGN can refer to:

SGN (company), a gas distribution company operating in Scotland and southern England
The airport code for Tan Son Nhat International Airport, Ho Chi Minh City, Vietnam
The National Rail station code for South Greenford railway station, London, England
Sélection de Grains Nobles, a French term for sweet wines made from grapes affected by noble rot
Some Good News, a YouTube series
Samsung Galaxy Note, a series of mobile phones
Seattle Gay News, owner of the sgn.org domain

In mathematics