| Rothenberg, Jennifer | Park & Recreation Commission, 2021 | | | jrothenberg@town.arlington.ma.us |
| Rice M.D., Peter | Board of Health, 6/2025 | | | |
| Remy, Jordan | Finance Committee (Prct. 1, 2025) | | | |
| Rademacher, Michael | Disability Commission, 2024 | | | |
| Rademacher, Michael | Building Committee (PTBC), Superintendent of Schools designee | | | |
| Roman, Joan | Human Rights Response Coordination Team | Boards & Commissions, Town Manager | | |
| Revilak, Stephen | Information Technology Advisory Committee | Boards & Commissions, Town Manager | | |
| Radochia, Bob | Master Plan Advisory Committee | Boards & Commissions, Town Manager | | |
| Richter, Wendy | Master Plan Advisory Committee | Boards & Commissions, Town Manager | | |
| Rateau, Corey | TAC, Police Rep., Traffic Unit | Boards & Commissions, Town Manager | | |
| Ruggieri, Mike | Uncle Sam Committee | Boards & Commissions, Town Manager | | |
| Rademacher, Michael | Local Emergency Planning Committee, DPW Director | Boards & Commissions, Town Manager | | |
| Roman, Joan | Local Emergency Planning Committee, Public Information Officer | Boards & Commissions, Town Manager | | |
| Raymond, Richard | Local Emergency Planning Committee, Armstrong | Boards & Commissions, Town Manager | | |
| Radochia, Bob | Arlington Committee on Tourism & Economic Development | | | |
| Raia, PhD, Paul | Council on Aging, Associate | Boards & Commissions, Town Manager | | |
| Ratiner, Steven | Poet Laureate Committee, former Poet Laureate | Boards & Commissions, Town Manager | | |
| Rateau, Corey | Parking Advisory Committee, Police Traffic Division | Boards & Commissions, Town Manager | | |
| Russo, Anmarie | Veterans Council (6/30/2018) | | | |
| Robinson, JoAnn | Community Preservation Act Committee, Historical Commission | Town Manager | | |
