- Name - OCEANA
Meaning - FORM OF OCEANUS
- Name - ODA
Meaning - PRAISE GOD
- Name - ODEDA
Meaning - STRONG
- Name - ODELIA
Meaning - LITTLE WEALTHY ONE
- Name - ODELL
Meaning - WOAD HILL
- Name - ODESSA
Meaning - THE ODYSSEY
- Name - ODETTA
Meaning - MELODY
- Name - ODETTE
Meaning - LITTLE WEALTHY ONE
- Name - ODILA
Meaning - WEALTHY
- Name - ODILE
Meaning - WEALTHY
- Name - OENONE
Meaning - LOVER OF PARIS
- Name - OFELIA
Meaning - TO HELP
- Name - OGECHUKWU
Meaning - GOD'S TIME
- Name - OKSANA
Meaning - PRAISE BE TO GOD
- Name - OLA
Meaning - WEALTH
- Name - OLCAY
Meaning - LUCK
- Name - OLENKA
Meaning - HOLY
- Name - OLGA
Meaning - HOLY
- Name - OLIMPIA
Meaning - FROM MOUNT OLYMPUS
- Name - OLIN
Meaning - OF THE ANCESTORS
- Name - OLINDA
Meaning - DEFENDER OF THE LAND
- Name - OLITA
Meaning - WINGED
- Name - OLIVA
Meaning - SYMBOL OF PEACE
- Name - OLIVE
Meaning - KIND ONE
- Name - OLIVETTE
Meaning - OLIVE TREE
- Name - OLIVIA
Meaning - OLIVE TREE
- Name - OLJA
Meaning - HOLY
- Name - OLLIE
Meaning - OLIVE TREE
- Name - OLVA
Meaning - OLIVE TREE
- Name - OLWYN
Meaning - WHITE FOOTPRINT
- Name - OLWYNE
Meaning - MEANING UNKNOWN
- Name - OLYA
Meaning - HOLY
- Name - OLYMPIA
Meaning - MOUNTAIN OF THE GOD
- Name - OMEGA
Meaning - LAST
- Name - OMERA
Meaning - INSPIRING
- Name - ONA
Meaning - FIRE
- Name - ONDINA
Meaning - LITTLE WAVE
- Name - ONDINE
Meaning - LITTLE WAVE
- Name - ONDREA
Meaning - STRONG
- Name - ONDREEA
Meaning - COURAGEOUS
- Name - OPHIRA
Meaning - GOLD
- Name - OPRAH
Meaning - FAWN
- Name - ORAH
Meaning - LIGHT
- Name - ORANIA
Meaning - RISING
- Name - OREA
Meaning - FROM THE MOUNTAIN
- Name - ORELLA
Meaning - DIVINE MESSAGE
- Name - ORIA
Meaning - DAWNING
- Name - ORIAL
Meaning - GOLDEN
- Name - ORIANA
Meaning - GOLDEN ONE
- Name - ORIANE
Meaning - RISING
- Name - ORIANNA
Meaning - GOLDEN
- Name - ORIELLA
Meaning - GOLDEN
- Name - ORINA
Meaning - PEACE
- Name - ORLAGH
Meaning - GOLDEN QUEEN
- Name - ORLAITH
Meaning - GOLDEN
- Name - ORLANDA
Meaning - FAMOUS LAND
- Name - ORLEE
Meaning - LIGHT
- Name - ORLENA
Meaning - GOLD
- Name - ORLI
Meaning - THE LIGHT IS MINE
- Name - ORLY
Meaning - THE LIGHT IS MINE
- Name - ORNELLA
Meaning - FLOWERING ASH TREE
- Name - ORSA
Meaning - FEMALE BEAR
- Name - ORSOLA
Meaning - FEMALE BEAR
- Name - ORTENSIA
Meaning - OF THE GARDEN
- Name - OSANA
Meaning - HEALTH
- Name - OSANNA
Meaning - PRAISE
- Name - OSMA
Meaning - GOD'S PROTECTION
- Name - OTILIA
Meaning - ACUTE HEARING
- Name - OTTA
Meaning - THIN
- Name - OTTAVIA
Meaning - BORN EIGHTH
- Name - OTTILIE
Meaning - LITTLE WEALTHY ONE
- Name - OUIDA
Meaning - FAMOUS WARRIOR
- Name - OURANIA
Meaning - HEAVENLY
- Name - OWENA
Meaning - YOUNG WARRIOR
- Name - OZGE
Meaning - DIFFERENT
