Participants in the NERGC 2023 Society Fair were:
- Afro-American Historical and Genealogical Society – N.E. Chapter
- Cape Cod Genealogical Society
- Central Massachusetts Genealogical Society
- Clan McBean of North America
- Connecticut Professional Genealogical Council
- DAR, Betty Allen Chapter DAR
- Falmouth Genealogical Society
- Genealogical Federation of Long Island
- Harriman Family Association
- Jewish Genealogical Society of Greater Boston
- Kimball Family Association
- Locke Family Association
- Maine Old Cemetery Association
- Massachusetts Genealogical Council
- Plymouth County Genealogists
- Polish Genealogical Society of Massachusetts
- Society of Middletown First Settlers Descendants
- South Shore Genealogical Society
- Swedish Ancestry Research Association
- Thomas Stanton Society
- Western Massachusetts Genealogical Society
- Women Descendants of the Ancient & Honorable Artillery Company