| 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 | |