Baby Boy Names Starting With The Letter O
| No. | Name | Meaning |
|---|
| 1 | Oakley | From the oak meadow |
| 2 | Obadiah | Servant of God |
| 3 | Oberon | Noble bear |
| 4 | Obert | Brightness |
| 5 | Obi | Heart |
| 6 | Obie | Servant of God |
| 7 | Oceana | Of the ocean |
| 8 | Octavio | Eighth |
| 9 | Odell | Wealthy |
| 10 | Odin | God of wisdom, war and death |
| 11 | Odis | Wealth |
| 12 | Oenone | Mythical name meaning "wine" |
| 13 | Oisin | Little deer |
| 14 | Ojai | Moon |
| 15 | Oke | From a town in Norway |
| 16 | Okechi | God's portion |
| 17 | Okey | God's portion |
| 18 | Okpara | Firstborn son |
| 19 | Okwui | Born during a time of peace |
| 20 | Olaf | Ancestor's relic |
| 21 | Ole | Ancestor's descendant |
| 22 | Oleg | Holy, blessed |
| 23 | Oli | Olive tree |
| 24 | Olin | Holly |
| 25 | Oliver | Olive tree |
| 26 | Ollie | Olive tree |
| 27 | Olu | God is great |
| 28 | Oluwasegun | God has been victorious |
| 29 | Oluwatobi | God is big |
| 30 | Om | Sacred syllable in Hinduism |
| 31 | Omar | Long-lived |
| 32 | Omega | The last |
| 33 | Omri | Servant of Jehovah |
| 34 | Onan | Wealthy |
| 35 | Onkar | One with God |
| 36 | Onslow | From the zealous one's hill |
| 37 | Onyx | Precious black gemstone |
| 38 | Ophion | Serpent |
| 39 | Ora | Seacoast |
| 40 | Oran | Pale |
| 41 | Orazio | Keeper of the hours |
| 42 | Orban | From the city |
| 43 | Oren | Ash tree |
| 44 | Orestes | Mountain |
| 45 | Orin | Fair-haired |
| 46 | Orion | Son of fire |
| 47 | Oris | Tree |
| 48 | Orland | Famous land |
| 49 | Orley | From the ancient oak tree grove |
| 50 | Orlo | From the ancient oak tree grove |
| 51 | Orman | From the ancient oak tree grove |
| No. | Name | Meaning |
|---|
| 52 | Ormond | Spear defender |
| 53 | Orpheus | Darkness, beyond the limits of the physical world |
| 54 | Orrick | Powerful ruler |
| 55 | Orson | Bear cub |
| 56 | Orval | Golden city |
| 57 | Orville | Gold town |
| 58 | Osbert | Divine brightness |
| 59 | Osborne | Divine warrior |
| 60 | Oscar | God's spear |
| 61 | Osmond | Divinely protected |
| 62 | Osric | Divine ruler |
| 63 | Oswald | God's power |
| 64 | Oswin | Friend of God |
| 65 | Otis | Wealthy |
| 66 | Otto | Wealth |
| 67 | Ovid | Sheep |
| 68 | Owen | Youth |
| 69 | Oz | Strength |
| 70 | Ozzie | God's strength |
| 71 | Oziel | God is my strength |
| 72 | Ozzie | God's strength |
| 73 | Oziel | God is my strength |
| 74 | Olegario | Holy, blessed |
| 75 | Olexiy | Defender |
| 76 | Ollin | Movement |
| 77 | Omer | Long-lived |
| 78 | Omri | Servant of Jehovah |
| 79 | Oneal | Descendant of Niall |
| 80 | Onslow | From the zealous one's hill |
| 81 | Oram | From the riverbank |
| 82 | Oren | Pine tree |
| 83 | Orest | Mountain |
| 84 | Orfeo | Darkness, beyond the limits of the physical world |
| 85 | Orhan | Of the army |
| 86 | Ori | Light |
| 87 | Orian | The dawn |
| 88 | Orion | Son of fire |
| 89 | Oris | Tree |
| 90 | Orland | Renowned in the land |
| 91 | Orson | Bear cub |
| 92 | Orton | From the shore town |
| 93 | Orville | Gold town |
| 94 | Oscar | God's spear |
| 95 | Osvaldo | Divine power |
| 96 | Oswaldo | Divine power |
| 97 | Oswin | Divine friend |
| 98 | Othello | Wealthy |
| 99 | Othniel | Strength of God |
| 100 | Otho | Wealth |
| 101 | Otis | Wealthy |
| 102 | Otso | Bear |
| 103 | Otto | Wealth |
| 104 | Ovid | Sheep |
| 105 | Ozias | God helps |
|---|
| 106 | Owain | Youth |
| 107 | Owen | Youth |
| 108 | Owyn | Youth |
| 109 | Ozzie | God's strength |
| 110 | Oziel | God is my strength |
| 111 | Ozzy | God's strength |
| 112 | Ovidiu | Shepherd |
| 113 | Oviedo | From Oviedo, Spain |
| 114 | Owan | Young warrior |
| 115 | Owyne | Young warrior |
| 116 | Ozias | God helps |
| 117 | Ozil | Divine spear |
| 118 | Ozzy | God's strength |
| 119 | Othmar | Possessor of riches |
| 120 | Omer | Long-lived |
| 121 | Orren | Pale-skinned |
| 122 | O'Neil | Champion |
| 123 | O'Ryan | Descendant of Rian |
| 124 | O'Shea | From the fairy palace |
| 125 | O'Sullivan | Descendant of Súilleabháin |
| 126 | O'Toole | Ruler of the people |
| 127 | Odel | Wealthy |
| 128 | Odin | God of wisdom |
| 129 | Ogden | From the oak valley |
| 130 | Ojai | Chumash word for moon |
| 131 | Okello | Born after twins |
| 132 | Olaf | Ancestor |
| 133 | Olamide | My wealth has come |
| 134 | Olav | Ancestor |
| 135 | Olcan | Little hero |
| 136 | Ole | Ancestor |
| 137 | Oleg | Holy |
| 138 | Olek | Defender |
| 139 | Olen | Holy |
| 140 | Oli | Olive tree |
| 141 | Olin | Holly |
| 142 | Olindo | Gentle |
| 143 | Oliver | Olive tree |
| 144 | Olivier | Olive tree |
| 145 | Ollie | Olive tree |
| 146 | Olu | God |
| 147 | Olufemi | God loves me |
| 148 | Olujimi | God gave me this |
| 149 | Olumide | My Lord has come |
| 150 | Olusegun | God is victorious |
| 151 | Oluwaseun | Thank God |
| 152 | Oluwatobiloba | God is supreme |
| 153 | Omar | Long-lived |
| 154 | Omari | God the highest |
| 155 | Omolara | A child is family |
| 156 | Omri | Servant of Jehovah |
| 157 | Onan | Strong |
| No. | Name | Meaning |
|---|
| 158 | Oneal | Descendant of Niall |
| 159 | Onslow | From the zealous one's hill |
| 160 | Onur | Honor, glory |
| 161 | Ora | Light |
| 162 | Oran | Little pale green one |
| 163 | Orville | Gold town |
| 164 | Oscar | God's spear |
| 165 | Osman | Servant of God |
| 166 | Ossian | Little deer |
| 167 | Oswald | Divine power |
| 168 | Otis | Wealthy |
| 169 | Othello | Prosperous |
| 170 | Othniel | Lion of God |
| 171 | Otsoa | Wolf |
| 172 | Otus | Wealthy |
| 173 | Ovid | Shepherd |
| 174 | Owain | Youth |
| 175 | Owen | Youth |
| 176 | Owyn | Youth |
| 177 | Oziel | God is my strength |
| 178 | Ozil | Divine spear |
| 179 | Ozias | God helps |
