Many academic and administrative departments have home pages on NJIT's Web site and are accessible from the address above.
| Main Offices | Extension |
| Admissions: Graduate and Undergraduate | 3300 |
| Alumni Affairs, Office of | 3441 |
| Biological Sciences, Division of | 5612 |
| Biomedical Engineering, Department of | 5268 |
| Bookstore | 3200 |
| Bursar, Office of the | 3157 |
| Campus Center | 3605 |
| Career Development Services, Division of | 3100 |
| Chemical Engineering, Otto H. York Department of | 3568 |
| Chemistry and Environmental Science, Department of | 3595 |
| Civil and Environmental Engineering, Department of | 2444 |
| College of Computing Sciences, Office of the Dean | 5304 |
| College of Science and Liberal Arts, Office of the Dean | 3677 |
| Computer Science, Department of | 3366 |
| Computing Help Desk | 2900 |
| Continuing Professional Education, Division of | 3061 |
| Cooperative Education and Internships, Office of | 3100 |
| Electrical and Computer Engineering, Department of | 3513 |
| Employment, Student | 3474 |
| Engineering Science Program | 3228 |
| Engineering Technology, Department of | 3228 |
| Financial Aid, Office of | 3479 |
| Graduate Studies, Office of | 3462 |
| History, Federated Department of | 3377 |
| History, Federated Department of Rutgers-Newark | 353-5410 |
| Honors College, Albert Dorman | 642-4448 |
| Human Resources, Office of | 3140 |
| Humanities, Department of | 3266 |
| Industrial and Manufacturing Engineering, Department of | 3660 |
| Information Systems Department of | 3368 |
| Information Technology Program | 5764 |
| Intellectual Property, Office of | 5825 |
| International Students and Faculty, Office of | 3579 |
| Library, Architecture | 3083 |
| Library, Robert W.Van Houten | 3206 |
| Mathematical Sciences, Department of | 5782 |
| Mechanical Engineering, Department of | 3331 |
| Microelectronics Fabrication Center (MFC) | 5696 |
| New Jersey School of Architecture, Office of the Dean | 3080 |
| Newark College of Engineering, Office of the Dean | 3226 |
| Physical Education and Athletics | 3636 |
| Physics, Department of | 3562 |
| Public Safety, Department of | 3111 |
| Registrar, Office of | 3236 |
| Research and Development, Office of | 3429 |
| Residence Life | 3039 |
| School of Management, Office of the Dean | 3019 |
| University Advancement, Office of | 3400 |
| University Communications, Office of | 3433 |
