Baby boy names beginning with O – with origins and meanings
Are you trying to find baby name ideas for a boy that start with the 15th letter of the alphabet? Oooo well, we’ve got some outstanding suggestions, along with their origin and meaning
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Are you searching for the perfect name for your newborn? Have a look through our list of best baby boy names beginning with O to work out whether your son could be an Obadiah, Orlando or Oz
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1. Oakley
- Origin: Old English
- Meaning: meadow of oak trees
2. Obadiah
- Origin: Hebrew
- Meaning: serving Jehovah
3. Oberon
- Origin: German
- Meaning: noble, bear-like
- Also: Aubrey
4. Obiajulu
- Origin: African American
- Meaning: the heart is consoled
5. Ocean
- Origin: Modern
- Meaning: the sea
6. Octavius
- Origin: Latin
- Meaning: eighth; a Roman family name used as a first name
- Also: Octavian
7. Odin
- Origin: Scandinavian
- Meaning: frenzy, rage, inspiration; Odin was the father of all Norse gods
8. Odion
- Origin: Mixed African
- Meaning: one of a twin
9. Odo
- Origin: Old English
- Meaning: rich
10. Ofer
- Origin: Hebrew
- Meaning: young dear; implying gentleness and agility
11. Ogden
- Origin: Old English
- Meaning: oak valley
12. Ogilvie
- Origin: Scottish
- Meaning: high place; surname used as a first name
- Also: Ogilvy
13. Oko
- Origin: African
- Meaning: oldest twin
Looking for names for boys starting with other letters of the alphabet?
Complete your baby boy name shortlist by clicking on the letter you’re after
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14. Olaf
- Origin: Old Norse
- Meaning: ancestors or heir
- Also: Olav
15. Oliver
- Origin: Old French
- Meaning: olive tree
- Also: Ol, Ollie
16. Omar
- Origin: Arabic
- Meaning: flourishing
17. Omari
- Origin: Swahili, Egyptian
- Meaning: in Swahili, God is the highest, in Egyptian, high born
18. Onan
- Origin: Turkish
- Meaning: prosperous
19. Onyx
- Origin: Greek
- Meaning: black gemstone; also used as a girl’s name
20. Orban
- Origin: Latin
- Meaning: circle or globe
21. Orestes
- Origin: Greek
- Meaning: mountain
22. Orion
- Origin: Greek
- Meaning: son of light
23. Orlando
- Origin: Italian
- Meaning: glorious land
- Also: Roland
24. Ormond
- Origin: Gaelic
- Meaning: descendant of the red one
- Also: Ormonde
25. Orson
- Origin: Old French
- Meaning: small bear
26. Orville
- Origin: French
- Meaning: gold town
27. Osbert
- Origin: Old English
- Meaning: bright god
- Meaning: Oz, Ozzy
28. Osborn
- Origin: Old English
- Meaning: god-like man
29. Osborne
- Origin: Norse/Old English
- Meaning: divine bear
- Also: Osbourne
30. Oscar
- Origin: Old English
- Meaning: spear of God
- Also: Oskar
31. Osman
- Origin: Arabic
- Meaning: little bustard
32. Osmond
- Origin: Old English
- Meaning: protected by God
- Also: Ossie
33. Ossian
- Origin: Old Irish
- Meaning: little deer
34. Oswald
- Origin: Old English
- Meaning: power of God
- Also: Oz, Ozzy
35. Oswin
- Origin: Old English
- Meaning: friend of God
36. Otis
- Origin: Old German
- Meaning: son of Otto
37. Otto
- Origin: Old German
- Meaning: wealthy
38. Owen
- Origin: Welsh
- Meaning: lamb
- Also: Owain
39. Oxford
- Origin: Old English
- Meaning: a shallow ford where cattle can cross; a famous university town in the UK
40. Oxton
- Origin: Old English
- Meaning: the ox farm or settlement
41. Oz
- Origin: Hebrew
- Meaning: strength
About our author Catherine Ball
Catherine Ball is a freelance journalist who specialises in writing about parenting and health. She has been a journalist for 20 years, writing for a wide range of regional and national publications. She is also mum to 4 children between the ages 3 and 12, so has drawn up many, many lists of baby names over the past few years.
Illustration: Emma Winchester
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