| Name | Title | Phone | Email |
| O'Brien, Sharon D. | Tutor | 517-264-7741 Ext. | sobrien@sienaheights.edu |
| O'Flynn, James A, M.A. | Distance Learning Coordinator; Assistant Professor of Management | 248-669-6094 Ext. | joflynn@sienaheights.edu |
| Oliver, Scott Lawrence | Head Women's Soccer Coach | 517-264-7879 Ext. | soliver@sienaheights.edu |
| Orlando, Michael | Director of Residence Life | 517-264-7172 Ext. | morlando@sienaheights.edu |
| Ossmann, Peter J. | Assistant Director of Campus Event Management and Public Safety | 517-264-7617 Ext. | possmann@sienaheights.edu |
| Outlaw, Khalilah | Assistant Director of the Metropolitan Detroit Program | 800-787-7784 Ext. 232 | koutlaw@sienaheights.edu |