Search boys Baby Names starting with letter O
| # | Name | Origin | Meaning | Gender | Save |
| 351 | Osric | Teutonic | Divine ruler. | M |  |
| 352 | Osrick | English | Divine ruler. | M | |
| 353 | Osrid | English | Divine counselor. | M | |
| 354 | Osrik | English | Divine ruler. | M | |
| 355 | Osrik | Teutonic | Divine ruler. | M | |
| 356 | Osryd | English | Divine counselor. | M | |
| 357 | Ossama | Muslim | One of the names of the lion.. | M | |
| 358 | Ossian | Irish | Fawn. | M | |
| 359 | Ossie | English | Diminutive of Oscar: Divine spear; God's spear. Famous Bearer: poet Oscar Wilde (1854-1900), who was put on trial and imprisoned for homosexuality. | M | |
| 360 | Ossy | English | Diminutive of Oscar: Divine spear; God's spear. Famous Bearer: poet Oscar Wilde (1854-1900), who was put on trial and imprisoned for homosexuality. | M | |
| 361 | Ostein | Norse | Happy. | M | |
| 362 | Osten | Norse | Happy. | M | |
| 363 | Osvald | Teutonic | Divine power. | M | |
| 364 | Osvif | Norse | Father of Gudrun. | M | |
| 365 | Oswald | Anglo-Saxon | Name of a king. | M | |
| 366 | Oswald | English | Divine power. | M | |
| 367 | Oswald | German | Power of God. | M | |
| 368 | Oswald | Shakespearean | 'Tragedy of King Lear' Steward to Goneril. | M | |
| 369 | Oswald | Teutonic | Divine power. | M | |
| 370 | Oswaldo | Teutonic | Divine power. | M | |
| 371 | Oswallt | Welsh | Welsh form of Oswald 'strength from God'. | M | |
| 372 | Osweald | English | Divinely powerful. | M | |
| 373 | Oswell | English | Divinely powerful. | M | |
| 374 | Oswin | English | Divine friend; God's friend. | M | |
| 375 | Oswin | Scandinavian | God's friend. | M | |
| 376 | Oswine | Anglo-Saxon | Name of a king. | M | |
| 377 | Oswiu | Anglo-Saxon | Name of a king. | M | |
| 378 | Oswy | Anglo-Saxon | Name of a king. | M | |
| 379 | Oszkar | Hungarian | Hungarian form of Oscar 'leaping warrior'. | M | |
| 380 | Ota | Teutonic | Rich. | M | |
| 381 | Otaktay | NativeAmerican | Kills many (Sioux). | M | |
| 382 | Othello | Shakespearean | 'The Tragedy of Othello, Moor of Venice' Othello, the Moor, general of the Venetian forces. | M | |
| 383 | Othin | Norse | God of the sky. | M | |
| 384 | Othman | German | Wealthy. | M | |
| 385 | Othmann | German | Wealthy. | M | |
| 386 | Othmar | Teutonic | Happy fame. | M | |
| 387 | Othni | Biblical | My time, my hour. | M | |
| 388 | Othniel | Biblical | The hour of God | M | |
| 389 | Otho | German | Wealthy. | M | |
| 390 | Othomann | German | Wealthy. | M | |
| 391 | Otik | Czechoslovakian | Wealthy. | M | |
| 392 | Otik | Teutonic | Rich. | M | |
| 393 | Otis | German | Wealthy. | M | |
| 394 | Otis | Greek | Keen of hearing. | M | |
| 395 | Oto | Teutonic | Rich. | M | |
| 396 | Otoahhastis | NativeAmerican | Tall bull (Cheyenne). | M | |
| 397 | Otoahnacto | NativeAmerican | Bull bear (Cheyenne). | M | |
| 398 | Otokars | Teutonic | Rich. | M | |
| 399 | Otomars | Teutonic | Rich. | M | |
| 400 | Otos | Greek | Keen of hearing. | M | |