1. OAKES - ( english, male ) from the oak
2. OAKLEY - ( english, male ) from the oak-tree meadow
3. OANA - ( romanian, female ) meaning unknown
4. OBA - ( egyptian, male ) king
5. OBADIAH, - ( hebrew, male ) serves God
6. OBASI - ( african, male ) Ibo of Nigeria name meaning "in honor of the supreme God."
7. OBAX - ( african, female ) Popular Somalian name meaning "flower."
8. OBELIA - ( greek, female ) pointed pillar
9. OBI - ( african, male ) Ibo of Nigeria name meaning "heart."
10. OBIAREUS - ( greek, male ) myth name (a Titan)
11. OBIKE - ( african, male ) Ibo of Nigeria name meaning "a strong household."
12. OCEANUS - ( greek, male ) myth name (father of the Oceanids)
13. OCELFA - ( english, male ) from the high plain
14. OCNUS - ( greek, male ) incompetent
15. OCTA - ( anglo, male ) a son of Hengist
16. OCTAVE - ( french, male ) born eighth
17. OCTAVIA - ( italian, female ) born eighth
18. OCTAVIA - ( romanian, female ) eighth
19. OCTAVIAN - ( romanian, male ) eighth
20. OCTHA - ( arthurian, male ) enemy of Arthur