| Name | Department | Phone # |
| O'Brien, Michael | Mathematics | 585-292-2036 |
| O'Brien, Scarlett | Nursing | |
| O'Brien, Suzanne | STEM & Health | |
| O'Donnell, Nancy | English and Philosophy | |
| O'Keefe, Carly | Global Education & International Services | 585-292-3171 |
| O'Neil, Grace | Public Safety | 585-292-2912 |
| Oettinger, Philip | Facilities | 585-292-2808 |
| Ofsowitz, Michael | Psychology | 585-292-3211 |
| Oinen, Elizabeth | English and Philosophy | |
| Ojuro, Wiljar | Health and Physical Education | |
| Okoronkwo, Chijindu | Library | |
| Oliver, Deborah | Controller's Office - Payroll | 585-292-2156 |
| Olivieri, Valerie | Law and Criminal Justice | 585-685-6167 |
| Ophardt, Courtney | Liberty Partnerships | 585-685-6190 |
| Oriel, Jodi | Student Life & Leadership Develop. | 585-292-2533 |
| Ornt, Patricia | Student Success & Advising Services | 585-292-2406 |
| Ortiz, Edwin | Custodial Operations | 585-292-2594 |
| Ortiz, Lydia | Financial Aid | 585-292-2556 |
| Orvetti, Rebecca | Computing & Information Technology Services | 585-292-2616 |
| Osenbach, Margaret | World Languages & Cultures | |
| Osterling, Philip | Marketing, Web & Social Media | 585-292-3012 |
| Ottley, Brayden | Marketing, Web & Social Media | 585-292-3004 |
| Otto, Cliff | Engineering Technologies | |
| Otto, Raymond | Career Technical Education | 585-292-2699 |
| Owens, Jennifer | Engineering Technologies | |
| Owen, Courtney | Housing and Residence Life | 585-292-3009 |
| Ozcelik, Ekrem | Public Safety | 585-292-2912 |