| Takahashi, Shoji | TAC, Member At Large, Secretary | Boards & Commissions, Town Manager | | |
| Tee, Carol | Historic Districts Commission, At-Large, 2024 | Boards & Commissions, Town Manager | | |
| Thielman, Jeff | School Enrollment Task Force, School Committee | Town Manager | | jthielman@arlington.k12.ma.us |
| Thielman, Jeff | School Committee, 2027 | Boards & Commissions, Town Manager | (781) 316-1728 | jthielman@arlington.k12.ma.us |
| Thornton, Barbara | Central School Feasibility Study Committee | Boards & Commissions | | |
| Thornton, Barbara | Building Maintenance Comm | Boards & Commissions, Town Manager | | |
| Timperi, Jeff | Arlington Cultural Council, Chair, Co-Chair, 1/31/2021 | | | |
| Tintocalis, Melissa | Master Plan Advisory Committee | Boards & Commissions, Town Manager | | |
| Tirone, Charles | Conservation Commission, Chair | Boards & Commissions | | |
| Tonkin, Christopher | Minuteman Bikeway 25th Anniversary Committee | | | |
| Tonkin, Christopher | Mass Ave/Appleton Design Review Committee, Bicycle Advisory Committee | | | |
| Tosi, Bob | Council on Aging, Associate | | | |
| Tosi, Jr., Bob | Arlington Committee on Tourism & Economic Development | Boards & Commissions, Town Manager | | |
| Tosi, Jr., Robert | Semiquincentennial Committee, Arlington Historical Society | | | |
| Tosti, Allan | Finance Committee (Prct. 17, 2024) | | | |
| Tosti, Allan | Budget Revenue Task Force, Finance Committee | | | |
| Tosti, Allan | School Enrollment Task Force, Finance Committee | Town Manager | | ATosti@town.arlington.ma.us |
| Tremblay, Geraldine | Cyrus E. Dallin Museum Trustees | | | |
| Trembly, Ed | Tree Committee, 12/2025 | Boards & Commissions, Town Manager | | |
