Search boys Baby Names starting with letter O
| # | Name | Origin | Meaning | Gender | Save |
| 301 | Os | English | Divine. | M |  |
| 302 | Os | Norse | Divine. | M | |
| 303 | Osahar | Egyptian | God hears me. | M | |
| 304 | Osaze | Egyptian | Loved by God. | M | |
| 305 | Osbart | English | Divinely brilliant. | M | |
| 306 | Osbeorht | English | Divinely brilliant. | M | |
| 307 | Osbert | English | Divinely brilliant. | M | |
| 308 | Osborn | English | Divine warrior. | M | |
| 309 | Osborn | Norse | Divine bear. | M | |
| 310 | Osborn | Teutonic | Divine bear. | M | |
| 311 | Osborne | English | Variant of Osborn: Divine warrior. | M | |
| 312 | Osborne | Norse | Variant of Osborn: Divine bear. | M | |
| 313 | Osboume | Teutonic | Divine bear. | M | |
| 314 | Osbourne | English | Divine warrior. | M | |
| 315 | Osburn | English | Divine warrior. | M | |
| 316 | Osburt | English | Divinely brilliant. | M | |
| 317 | Oscar | Celtic | Jumping fighter. | M | |
| 318 | Oscar | English | Divine spear; God's spear. Famous Bearer: poet Oscar Wilde (1854-1900), who was put on trial and imprisoned for homosexuality. | M | |
| 319 | Oscar | Norse | Divine spear. | M | |
| 320 | Osckar | Celtic | Jumping fighter. | M | |
| 321 | Osgood | Norse | A divine Goth. | M | |
| 322 | Osgood | Teutonic | Divine creator. | M | |
| 323 | Oshea | Biblical | A savior; a deliverer | M | |
| 324 | Osip | Hebrew | God wiIl multiply. | M | |
| 325 | Osip | Ukrainian | Ukrainian form of Joseph 'God shall add'. | M | |
| 326 | Osiris | Egyptian | God of the dead. | M | |
| 327 | Oskar | Celtic | Jumping fighter. | M | |
| 328 | Oskar | Norse | Divine spear. | M | |
| 329 | Oskar | Scandinavian | God's spear. | M | |
| 330 | Oskar | Swedish | Leaping warrior. | M | |
| 331 | Oskari | Finnish | Leaping warrior. | M | |
| 332 | Osker | Celtic | Jumping fighter. | M | |
| 333 | Osman | English | Godly protection. | M | |
| 334 | Osman | Scandinavian | Godly protection. | M | |
| 335 | Osmar | English | Divinely glorious. | M | |
| 336 | Osmarr | English | Divinely glorious. | M | |
| 337 | Osmin | English | Godly protection. | M | |
| 338 | Osmin | Scandinavian | Godly protection. | M | |
| 339 | Osmond | English | Divine protector. | M | |
| 340 | Osmond | Scandinavian | Godly protection. | M | |
| 341 | Osmond | Teutonic | God's protection. | M | |
| 342 | Osmont | English | Divine protector. | M | |
| 343 | Osmund | English | Variant of Osmond: Divine protector. | M | |
| 344 | Osmund | Scandinavian | Godly protection. | M | |
| 345 | Osmund | Teutonic | God's protection. | M | |
| 346 | Ospak | Norse | Brother of Gudrun. | M | |
| 347 | Osraed | English | Divine counselor. | M | |
| 348 | Osred | English | Divine counselor. | M | |
| 349 | Osric | Anglo-Saxon | Divine ruler. | M | |
| 350 | Osric | English | Divine ruler. | M | |