| Curren, James | Municipal Vulnerability Preparedness, Captain Arlington Police | | | |
| Cuff, Nicole | Commission for Arts and Culture, 6/2025 | | | |
| Cox, Nancy | Council on Aging, 2024 | | | |
| Costello, Chris | Cyrus E. Dallin Museum Trustees | Boards & Commissions, Town Manager | | |
| Copithorne, Interim Town Engineer, Bill | Mass Ave/Appleton Design Review Committee, Department of Public Works | | | |
| Copithorne , William | Public Memorial Committee | Town Manager | | |
| Copithorne, Bill | TAC, Public Works Rep | Boards & Commissions, Town Manager | | |
| Copithorne, Bill | Municipal Vulnerability Preparedness, Interim Town Engineer | | | |
| Cook, Grant | Master Plan Update Advisory Committee | Town Manager | | |
| Conway, Andrew | ACAC Grants Committee, Co-chair, Treasurer, 2026 | | | |
| Conway, Andrew | Arlington Cultural Council, Treasurer, 6/30/2023 | | | |
| Connerney, Sheila | Council on Aging, 2024 | | | |
| Cole, John | High School Building Committee | | | |
| Cole, John | School Enrollment Task Force, Permanent Town Building Committee | Town Manager | | john@johncolearchitect.com |
| Cohen, Beth | Historic Districts Commission, Vice Chair, 2024 | Boards & Commissions, Town Manager | | |
| Cody, Ida | Audit Advisory Committee, Town Comptroller | Town Manager | | |
| Cody, Ida | Capital Planning Committee, Comptroller | Town Manager | | |
| Cody, Ida | Retirement Board | | | |
| Christiana, Greg | Town Meeting Procedures Committee, Moderator | Boards & Commissions, Town Manager | | |
| Chhabra, Shelley | ACAC Grants Committee, Co-chair, Secretary, 2026 | | | |
