| D'Angelo, Chris | Arlington Committee on Tourism & Economic Development, Vice Chair | | | |
| Danizio, John | Information Technology Advisory Committee | Boards & Commissions, Town Manager | | |
| Danizio, John | Building Maintenance Comm | Boards & Commissions, Town Manager | | |
| Davidson-Hernandez, Jennifer | Arlington Civilian Police Advisory Commission, 6/2027 | | | |
| Davison, Robert | AHNAP, Resident | | | |
| Davison, Thomas | Arlington Committee on Tourism & Economic Development, Treasurer | Boards & Commissions, Town Manager | | |
| Deakin, Michelle | Arlington Committee on Tourism & Economic Development | | | |
| Deck , Stewart | Poet Laureate Committee, School Designee | Boards & Commissions | | |
| DeCourcey, Mary | Board of Youth Services, 2017 | Boards & Commissions | | |
| DeCourcey, Stephen | Local Emergency Planning Committee, Select Board | | | |
| DeCourcey, Stephen | Council on Aging, Select Board Liaison | | | |
| DeCourcey, Stephen W. | Select Board, Chair, 2025 | | (781) 643-7291 | SDeCourcey@town.arlington.ma.us |
| DeCourcey, Steve | Long Range Planning Committee | | | |
| Dein, Shelly | Clean Energy Future | | | |
| Delaunay-Danizio , Ann-Marie | Cyrus E. Dallin Museum Trustees | Boards & Commissions, Town Manager | | |
| Delmolino, Adam | Library Board of Trustees, 01/2027 | Boards & Commissions | | |
| Demers, Roland | Constables | | (617) 640-1791 | |
| Dennis, Greg | Election Modernization Committee, Chair | Town Manager | | gdennis@alum.mit.edu |
| Dertz, Emily | Zero Waste Arlington | | | |
| Desai, Mahendra | Council on Aging, 2025 | | | |
