Dog names · by letter
Dog names that start with O
Dogs in our data carry 1,002 different O-names — 2.6% of all licensed dogs, making O the #15 first letter overall.
Rising O-names
Biggest rank climbs, 2020 → 2025.
Top girl names with O
Top boy names with O
Top 50 O-names overall
| Name | Gender | Trend | ||
|---|---|---|---|---|
| 1 | Oliver | Boy | ||
| 2 | Ollie | Boy | ||
| 3 | Oreo | Either | ||
| 4 | Oscar | Boy | ||
| 5 | Olive | Girl | ||
| 6 | Otis | Boy | ||
| 7 | Ozzy | Boy | ||
| 8 | Otto | Boy | ||
| 9 | Odin | Boy | ||
| 10 | Onyx | Either | ||
| 11 | Oakley | Either | ||
| 12 | Olivia | Girl | ||
| 13 | Ozzie | Boy | ||
| 14 | Obi | Boy | ||
| 15 | Odie | Boy | ||
| 16 | Oso | Boy | ||
| 17 | Opal | Girl | ||
| 18 | Opie | Boy | ||
| 19 | Owen | Boy | ||
| 20 | Ophelia | Girl | ||
| 21 | Oskar | Boy | ||
| 22 | Oslo | Boy | ||
| 23 | Olaf | Boy | ||
| 24 | Orion | Boy | ||
| 25 | Obie | Boy | ||
| 26 | Ocean | Either | ||
| 27 | Osito | Boy | — | |
| 28 | Olly | Boy | ||
| 29 | Otter | Either | ||
| 30 | Oona | Girl | ||
| 31 | Oatmeal | Either | ||
| 32 | Oberon | Boy | ||
| 33 | Oli | Boy | — | |
| 34 | Oswald | Boy | ||
| 35 | Oz | Boy | ||
| 36 | Ortiz | Either | — | |
| 37 | Omar | Boy | ||
| 38 | Orla | Girl | ||
| 39 | Octavia | Girl | ||
| 40 | Ori | Either | ||
| 41 | Osa | Girl | ||
| 42 | Oddie | Boy | ||
| 43 | Oden | Boy | ||
| 44 | Odysseus | Boy | ||
| 45 | Osita | Girl | — | |
| 46 | Oakie | Either | — | |
| 47 | Osiris | Boy | ||
| 48 | Omega | Either | ||
| 49 | Orlando | Boy | — | |
| 50 | Orson | Boy |
Want the full list? Browse every O-name in the data →