| Name | Meaning | Gender | Rashi |
|---|---|---|---|
| OSMUND | Noble, gracious, faithful servant of God | Male | NA |
| OSRED | (Old English) "divine counselor" | Male | NA |
| OSRIC | (Old English) "divine ruler." | Male | NA |
| OSRIC | Noble, gracious, faithful servant of God | Male | NA |
| OSVALDO | Divine ruler | Male | NA |
| OSWALD | (Anglo-Saxon) "divine power." Dim., Os, Oz. | Male | NA |
| OSWALD | Noble, gracious, faithful servant of God | Male | NA |
| OSWALD | Divine ruler | Male | NA |
| OSWIN | Noble, gracious, faithful servant of God | Male | NA |
| OSWIN | Friend of God | Male | NA |
| Otar | Incarnation | Male | Vrisha |
| OTHMAN | (Old German) "prosperous man." | Male | NA |