AAO East is a not-for-profit, volunteer-run organization that has supported the eastern ontario archival community for over 30 years. The Eastern Ontario Chapter ( EOC) of the Archives Association of Ontario originated as the Eastern Ontario Archivists Association (EOAA) in 1978. The association provided programs and workshops for archivists and attempted to promote archives to the public through various events. In 1989, the EOAA became a chapter of the AAO's predecessor, the Ontario Association of Archivists.
Today, AAO East continues to foster a strong archival community in eastern Ontario and to support its members and connect them to services and programs offered through its parent institution, the AAO. Each year, AAO East organizes a number of events where ideas are exchanged, new and old friends connect, and the eastern ontario archival community is strengthened.