BGN or bgn may refer to:
- Biglycan, a protein coded by the BGN gene
- Bulgarian lev, the currency of Bulgaria by ISO 4217 code
- The Western Balochi language
- The United States Board on Geographic Names
- Belaya Gora Airport, Yakutia, Russia
- Blessed George Napier Roman Catholic School, Banbury, UK
- Bridgend railway station, a main line station serving the town of Bridgend, south Wales
- 802.11b/g/n, a designation indicating device support for certain wireless computer networking standards
- Busch Grand National, former name for the NASCAR Xfinity Series
