  | 1867 West Dennis Graded School House Committee | |
| | Advisory Committee on Disabilities | |
| | Alternative Energy Committee | |
| | Arts & Culture Council | |
| | Assembly of Delegates | |
| | Beach Committee | |
| | Beach Management Advisory Committee | |
| | Board of Assessors | |
| | Board of Health | |
| | Cape Cod Collaborative | |
| | Cape Cod Commission | |
| | Capital Outlay Committee | |
| | Cemetery Advisory Committee | |
| | Climate & Coastal Resiliency Committee | |
| | Community Preservation Committee | |
| | Conservation Commission | |
| | Council on Aging Board | |
| | Dennis Affordable Housing Trust | |
| | Dennis Board of Water Commissioners | |
| | Dennis Housing Authority | |
| | Dennis Port West Dennis Advancement Committee | |
| | Diversity, Equity & Inclusion Committee | |
| | Economic Development Committee | |
| | Finance Committee | |
| | Fire Station 2 Building Committee | |
| | Golf Advisory Committee | |
| | Historical Commission | |
| | Human Services Advisory Committee | |
| | Jericho Committee | |
| | Josiah Dennis Manse Committee | |
| | Library Board | |
| | Memorial Day Observance / Parade Committee | |
| | Old Kings Highway Committee | |
| | Planning Board | |
| | Procurement Department | |
| | Recreation Commission | |
| | Road Safety Task Force | |
| | School Committee | |
| | Select Board | |
| | Shellfish Committee | |
| | Solid Waste & Recycling Committee | |
| | South Dennis Historic District Committee | |
| | Substance Use Disorder Advisory Council | |
| | Tourism Committee | |
| | Town Clerk | |
| | Treasurer / Collector | |
| | Wastewater Implementation Committee | |
| | Waterways Commission | |
| | Zoning Board of Appeals | |
| | Zoning Bylaw Study Committee | |