| Hurd, John | Audit Advisory Committee, Vice Chair Select Board | Boards & Commissions, Town Manager | | |
| Homan, Elizabeth | Audit Advisory Committee, Superintendent of Schools | Boards & Commissions, Town Manager | | |
| Horowitz, Gary | Human Rights Commission, 2024 | Boards & Commissions, Town Manager | | |
| Homan, Ph.D., Elizabeth C. | Human Rights Response Coordination Team | Boards & Commissions, Town Manager | | |
| Helmuth, Eric | Information Technology Advisory Committee | Boards & Commissions, Town Manager | | |
| Heidell, Pam | Master Plan Advisory Committee | Boards & Commissions, Town Manager | | |
| Hughes, Kenneth | Post Employment Medical Benefits Committee | Boards & Commissions, Town Manager | | |
| Hughes, Kenneth | Retirement Board | Boards & Commissions, Town Manager | | |
| Horan, Richard | Utility Pole Working Group | Boards & Commissions, Town Manager | | |
| Hurd, John | Arlington Committee on Tourism & Economic Development, Select Board | Boards & Commissions, Town Manager | | |
| Homan, Elizabeth | Local Emergency Planning Committee, School Superintendent | Boards & Commissions, Town Manager | | |
| Helmuth, Eric | Local Emergency Planning Committee, Select Board | Boards & Commissions, Town Manager | | |
| Hasbrouck, Brian L. | Cemetery Commission (1/2024) | Boards & Commissions | | |
| Hung, Mary | Council on Aging, 2024 | Boards & Commissions, Town Manager | | |
| Hayner, William | Veterans Council (6/30/2021) | | | |
| Hamilton, Malcolm | Central School Feasibility Study Committee | | | |
| Howard, Peter | Master Plan Implementation Committee | Boards & Commissions | | |
| Hampe, Amy | Library Board of Trustees, 01/2027 | Boards & Commissions | | |
| Homan, Dr. Elizabeth | High School Building Committee Co-Vice Chair, Superintendent of Schools | | | |
| Hoffman, Jock | Minuteman Bikeway 25th Anniversary Committee | | | |
