Nyssa
Inception
Nyx
Of the night
Oakley
From an oak tree forest
Obasi
In God's honor
Oberon
Elf ruler
Obrecht
Known for his inheritance
Ocean
Sea titan
Oceanus
Sea titan
Octavia
The eighth
Octavian
Eighth
Octavio
Eighth
Octavius
Eighth
Oda
Riches
Odalis
Riches
Odelia
Riches
Odell
Hill on which woad grows
Odessa
Filled with wrath
Odin
Fury
Odysseus
To hate
Ogden
From an oak valley
Ogechi
The greatest of God's times
Ogechukwukama
The greatest of God's times
Ogen
Anchor
Oili
Divine woman
Oisin
Small deer
Ok
Treasured
Oksana
Woman of hospitality
Olaf
Descendant of
Olalla
Good talker
Olamide
My wealth has come
Olamilekan
My wealth is growing
Olander
Sweden
Olavi
Descendant of
Olavo
Descendent of
Oldrich
Rich heritage
Oldrik
Powerful inheritance
Olek
Defender of man
Olena
Torch of light
Olga
Divine woman
Olin
Hallowed
Olive
Olive tree
Oliver
Elf warrior
Olivia
Olive
Olle
Descendant
Ollie
Olive
Olsen
Ole's son
Oluf
Descendant of
Olufemi
Adored by God
Olufunke
God took care of
Olympia
From Mount Olympus
Oma
Thriving
Omar
To flourish or to thrive