Fairfax County offers its residents a variety of opportunities to serve the community in an advisory capacity as members of a Board, Authority or Commission (also known as "BAC"). The following list includes Supervisor Foust's appointees and vacancies.
| Board, Authority or Commission | Appointee |
| A. Heath Onthank Award Selection Committee | Kerrie Wilson |
| Advisory Social Services Board | Alison Balzer |
| Airports Advisory Committee (Business) | Robert Ackerman |
| Airports Advisory Committee (District) | Jim Phelps |
| Animal Services Advisory Commission | Diane D'Arcy |
| Athletic Council (Principal) | Gregory Beckwith |
| Athletic Council (Alternate) | William Horrigan |
| Barbara Varon Volunteer Award Selection Committee | Barbara Glakas |
| Board of Building and Fire Prevention Code Appeals | David Conover |
| Board of Equalization of Real Estate Assessments | Arthur Nachman |
| Chesapeake Bay Preservation Ordinance Exception Review Committee | Frank Crandall |
| Child Care Advisory Council | Valerie Inman |
| Citizen Corps Council | William McKenna |
| Civil Service Commission | Herb Kemp |
| Commission for Women | Nancy Hopkins |
| Commission on Aging | Kay Larmer |
| Commission on Organ and Tissue Donation and Transplantation | Lisa Kory |
| Community Action Advisory Board | Ben Zuhl |
| Consumer Protection Commission | Wes Callender |
| Criminal Justice Advisory Board | Herb Kemp |
| Economic Advisory Commission (At-Large) | Jennifer Sicilliano |
| Economic Advisory Commission (District) | Todd R. House |
| Environmental Quality Advisory Council | Frank Crandall |
| Fairfax Area Disability Services Board | Tapan Banerjee |
| Fairfax County Convention & Visitors Corporation Board | Arvind Manocha |
| Fairfax-Falls Church Community Services Board | Jennifer Adeli |
| Health Care Advisory Board | Rosanne Rodilosso |
| Health Systems Agency Board | Batul Alsaigh |
| History Commission - At Large | Carole Herrick |
| History Commission - Historian #3 | Stephanie Sedgwick |
| Human Services Council - Dranesville #1 | Steven Bloom |
| Human Services Council - Dranesville #2 | Fatima Mirza |
| Information Technology Police Advisory Committee | Nikhil Shenoy |
| Juvenile and Domestic Relations District Court Citizens Advisory Council | Alan Shuman |
| Library Board | Darren Ewing |
| Park Authority Board | Tim Hackman |
| Planning Commission | John Ulfelder |
| Redevelopment and Housing Authority | Melissa Jonas |
| Reston Transportation Service District Advisory Board | Alexander Rough |
| Small Business Commission | Malachi Jones |
| Tenant Landlord Commission | Paula Park |
| Trails and Sidewalks Committee | Wade Smith |
| Transportation Advisory Commission | Michael Champness |
| Tree Commission | Bob Vickers |
| Trespass Towing Advisory Board | Alvin Leach |
| Tysons Transportation Service District Advisory Board | Mark Zetts |
| Water Authority | Armand Weiss |
For more information visit the BAC website or contact the Office of the Clerk to the Board of Supervisors.
