| Starks, Cindy | School Enrollment Task Force, School Committee | Town Manager | | cstarks@arlington.k12.ma.us |
| Susse, Jennifer | Election Modernization Committee, School Committee Designee | Town Manager | | |
| Sonin, Juhan | Election Modernization Committee | Town Manager | | |
| Swanson, David | Co-Chair, Community Preservation Act Committee, Select Board Appointee | Town Manager | | |
| Selker, Paul | Master Plan Update Advisory Committee | Town Manager | | |
| Savarese, Steve | Realtor, At Large, 2025 | Boards & Commissions, Town Manager | | |
| Stein, Miriam | Human Rights Response Coordination Team | Boards & Commissions, Town Manager | | |
| Swaim, Dave | Human Rights Response Coordination Team | Boards & Commissions, Town Manager | | |
| Svenson, Carol | Master Plan Advisory Committee | Boards & Commissions, Town Manager | | |
| Smith, Scott | TAC, Pct 1-7 Rep, Bicycle Advisory Liaison | Boards & Commissions, Town Manager | | |
| Stamps, Susan | Tree Committee, 12/2025 | Boards & Commissions, Town Manager | | |
| Schlichtman, Paul | Chair, School Committee, 2026 | Boards & Commissions, Town Manager | (617) 755-4300 | pschlichtman@arlington.k12.ma.us |
| Strassburger, George | Local Emergency Planning Committee, AEMA | Boards & Commissions, Town Manager | | |
| Shah, Kristine | Local Emergency Planning Committee, Council on Aging | Boards & Commissions, Town Manager | | |
| Sheppard, Patricia | Local Emergency Planning Committee, Chief Technology Officer | Boards & Commissions, Town Manager | | |
| Stubbe, James | TAC, Member At Large | Boards & Commissions, Town Manager | | |
| Swan, Laura | TAC, School Committee Liaison, Chair | Boards & Commissions, Town Manager | | |
| Stein, Leland | Parking Advisory Committee, Arlington Center Merchant | Boards & Commissions, Town Manager | | |
| Sankalia, Priya | | Boards & Commissions, Finance Committee, Select Board, Town Manager | | |
| Simon, Hannah | Board of Youth Services, 2019 | Boards & Commissions | | |
