| Jefferson, Robert | Central School Feasibility Study Committee | Fire | | |
| Jefferson, Robert | Building Committee (PTBC), 6/2025 | Town Manager | | |
| Jefferson, Robert | Retirement Board | | | |
| Janger, Matthew | High School Building Committee, AHS Principal | | | |
| Jamieson, Gordon | Board of Assessors | Boards & Commissions, Town Manager | | gjamieson@town.arlington.ma.us |
| Jackson, Toby | High School Building Committee, Community Member | | | |
| Ikeda, Stewart | Commission for Arts & Culture (ACAC), Co-Chair, 2021 | | | |
| Ikeda, Stewart | Semiquincentennial Committee, Arlington Commission on Arts & Culture (ACAC) | | | |
| Hurd, John V. | Parking Advisory Committee, Select Board | | | |
| Hurd, John V. | Select Board, 2027 | Boards & Commissions | | JHurd@town.arlington.ma.us |
| Hurd, John | Audit Advisory Committee, Vice Chair Select Board | Boards & Commissions, Town Manager | | |
| Hurd, John | Arlington Committee on Tourism & Economic Development, Select Board | Boards & Commissions, Town Manager | | |
| Hurd, John | CDBG Subcommittee, Select Board | | | |
| Hung, Mary | Council on Aging, 2024 | Boards & Commissions, Town Manager | | |
| Hughes, Kenneth | Post Employment Medical Benefits Committee | Boards & Commissions, Town Manager | | |
| Hughes, Kenneth | Retirement Board | Boards & Commissions, Town Manager | | |
| Howard, Peter | Master Plan Implementation Committee | Boards & Commissions | | |
| Horvath, Julie | AHNAP, Century 21 (Business) | | | |
| Horowitz, Gary | Human Rights Commission, 2024 | Boards & Commissions, Town Manager | | |
| Horn, Walter | Election Modernization Committee | | | |
