Clan MacMillan: Compiled by Clan MacMillan International Centre at Finlaystone, the chief's historic home in Scotland. Includes the pedigree of Chief George G MacMillan and associated variants such as Macmillan and McMillan.
Clan MacMillan Society of Australia: Society founded in 1983 to foster kinship between members of the MacMillan Clan and associated Septs. Newsletter, meetings and cemetery index.
Clan MacMillan, Pacific Branch: Home site of the clan in Southern California. Provides clan history, celtic local events schedule, membership details, sectional Scottish maps and t-shirts.
Clan MacMillan: Glengarry and Ottawa Valley: Local Canadian branch of the Clan MacMillian Society of North America. Focus is on individual family pedigrees, Scottish heritage and associated research resources.
MacMillan: North Central States, USA: Clan MacMillan (NCS) encompasses Minnesota, Wisconsin, Iowa, Illinois and the Dakotas; aim is to generate awareness of shared Scottish heritage amongst local family members.