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| Department | Phone Number | Fax Number |
| Admissions, Graduate | (203) 932-7440 | (203) 932-7137 |
| Admissions, Undergraduate | (203) 932-7322 | (203) 931-6093 |
| Advancement and Development | (203) 932-7264 | (203) 931-6053 |
| Athletics | (203) 932-7016 | (203) 932-7470 |
| Alumni | (203) 932-7271 | (203) 931-6020 |
| Bursar | (203) 932-7217 | (203) 931-6086 |
| Campus Bookstore | (203) 932-7030 | (203) 931-2956 |
| Campus Police (Dispatch) | (203) 932-7014 | (203) 931-6094 |
| Facilities and Construction | (203) 932-7199 | (203) 931-6051 |
| Finance | (203) 932-7266 | (203) 932-6060 |
| Financial Aid | (203) 932-7315 | |
| Human Resources | (203) 932-7240 | (203) 931-6062 |
| Marketing and Publications |
(203) 931-6048 |
|
| Office of Information Technology | (203) 932-7055 | (203) 932-7075 |
| Office of the President | (203) 932-7274 | (203) 932-6012 |
| Office of the Provost | (203) 932-7267 | (203) 932-6060 |
| Communications and Pubilc Relations | (203) 932-7246 | (203) 931-6008 |
| Registrar, Graduate | (203) 932-7309 | (203) 932-7429 |
| Registrar, Undergraduate | (203) 932-7301 | (203) 931-6096 |
| College of Lifelong & eLearning | (203) 932-7386 | (203) 932-7261 |
| WNHU Radio Station | (203) 932-8802 | (203) 931-6088 |
| College of Arts and Sciences | (203) 932-7256 | (203) 931-6080 |
| College of Business | (203) 932-7120 | (203) 931-6092 |
| Tagliatela College of Engineering | (203) 932-7168 | (203) 931-6091 |
| Henry C. Lee College of Criminal Justice and Forensic Sciences | (203) 932-7472 | (203) 931-6018 |
