| Ikeda, Stewart | Semiquincentennial Committee, Arlington Commission on Arts & Culture (ACAC) | | | |
| Jackson, Toby | High School Building Committee, Community Member | | | |
| Jamieson, Gordon | Board of Assessors | Boards & Commissions, Town Manager | | gjamieson@town.arlington.ma.us |
| Janger, Matthew | High School Building Committee, AHS Principal | | | |
| Jefferson, Robert | Retirement Board | | | |
| Jefferson, Robert | Central School Feasibility Study Committee | Fire | | |
| Jefferson, Robert | Building Committee (PTBC), 6/2025 | Town Manager | | |
| Johnson, Jack | Bicycle Advisory Committee (ABAC), 6/30/2025 | | | |
| Johnson, Jack | Minuteman Bikeway 25th Anniversary Committee | | | |
| Jones, Alan | Long Range Planning Committee | | | |
| Jones, Alan | Finance Committee, Vice Chair (Prct. 14, 2025) | Boards & Commissions, Town Manager | | |
| Jones, Alan | Audit Advisory Committee, Vice Chair Finance Committee | Boards & Commissions, Town Manager | | |
| Jones, Jack | Equal Opportunity Advisory Committee | Boards & Commissions | | |
| Jones, Scott | Human Rights Commission, 2024 | Boards & Commissions, Town Manager | | |
| Kalauskas, Charles | Master Plan Implementation Committee | Boards & Commissions | | |
| Kalauskas, Charles | Master Plan Advisory Committee | Boards & Commissions, Town Manager | | |
| Kaplan, Dave | Conservation Commission | | | |
| Kardon, Len | Long Range Planning Committee | | | |
| Kardon, Len | Budget Revenue Task Force, School Committee | | | |
| Kardon, Leonard | School Committee, 2025 | Boards & Commissions, Town Manager | (617) 721-0288 | lkardon@arlington.k12.ma.us |
