Clan Armstrong Trust
- Devoted to researching and preserving the heritage, history and culture of the Armstrongs. Museum, history, articles, events and news.
- http://www.armstrongclan.org.uk/

MyClan.com : Armigerous Clan Armstrong
- History of the powerful Borders family, arms, and current strongholds of the name.
- http://www.myclan.com/clans/Armstrong_147/

Clan Armstrong Association
- International association formed in 1969 with membership open to all lineal descendants and those bearing the name of Armstrong. Provides online membership form, clan news, genealogy, clan centre, gatherings, branch listings, and contacts.
- http://www.armstrong-clan-association.co.uk/

Armstrong Clan Society
- Home page for the Clan Society. With news, information on current and upcoming activities, resources and links.
- http://www.armstrong.org/