| Name | Meaning | Gender | Origin | Rashi |
|---|---|---|---|---|
| Osama | Lion | 👦 Boy | Arabic | — |
| Osamah | Lion | 👦 Boy | Arabic | — |
| Osas | God is great | 👦 Boy | Edo | — |
| Osbaldo | God's power | 👦 Boy | Spanish | — |
| Oscar | Divine spear; Friend of deer | 👦 Boy | International | — |
| Osei | Noble | 👦 Boy | Akan | — |
| Oseni | A favoured one | 👦 Boy | Yoruba | — |
| Osher | Happiness | 👦 Boy | Hebrew | — |
| Osiel | Strength of God | 👦 Boy | Spanish | — |
| Osita | Today | 👦 Boy | Igbo | — |
| Oskar | Divine spear | 👦 Boy | Norse | — |
| Oskari | Spear of God (Oscar) | 👦 Boy | Finnish | — |
| Osman | Baby bustard; After Caliph Uthman | 👦 Boy | Turkish | — |
| Osmar | God's glory | 👦 Boy | Portuguese | — |
| Osnat | Belonging to the goddess (Asenath) | 👧 Girl | Hebrew | — |
| Ossama | Lion | 👦 Boy | Arabic | — |
| Ossi | Spear of God (Oskari) | 👦 Boy | Finnish | — |
| Ostap | Steadfast (Eustathius) | 👦 Boy | Ukrainian | — |
| Osvaldo | Power of God | 👦 Boy | Spanish | — |
| Oswaldo | Power of God | 👦 Boy | Spanish | — |