| Aiken Computer Lab | 54117 |
| American Mathematical Society | (800) 321-4267 |
| Applied Mathematics (Harvard University) | 52833 |
| Bok Center | 54869 |
| Boston University | (617) 353-2560 |
| Brandeis University | (781) 736-3050 |
| Bureau of Study Counsel | 52581 |
| Computer Center (Science Center) | 55356 |
| Copy_Center (Science Center Basement) | 57500 |
| Director's Office (Science Center) | 52627 |
| Emergencies | 55560 |
| Extension School | 54024 |
| FAS Computer Services | (617) 495-7777 |
| FASCS Help Desk | 62727 |
| Fire | 55560 |
| Guard's Desk | 55260 |
| ID_Office (Holyoke Center) | 53322 |
| International Office | 62813 |
| Maintenance Building (Paul Kelly) | 68058 |
| Maintenance Building (Chris McNeil) | 57803 |
| Massachusets Institute of Technology | (617) 253-4381 |
| Northeastern University | (617) 373-2450 |
| Office of Sponsored Research (OSR) | 55501 |
| Physics (Harvard University) | 52872 |
| Police (Harvard University) | 51212 |
| Prep room (Audio Visual Equipment) | 55357 |
| Registrar | 51433 |
| Registrar FAS | 51543 |
| Registrar Exam | 51542 |
| Shipping and Receiving (Sam) | 55347 |
| Statistics (Harvard University) | 55496 |
| Student Resources (Ext. School tutoring) | 59657 |