Female and male first names beginning with the letter “O”..

Onzie is a distinctive American name created by fashion designer Diane von Fürstenberg for her son in the late 1980s. Its origin and meaning remain unknown, as it does not derive from any recognized language or culture.

Opal is a unique and captivating girl's name of unknown origin, believed to derive from Sanskrit 'upala' or Greek 'opalus', both meaning 'jewel'.

Opeyemi, derived from Yoruba words meaning "Let there be peace" and referring to kingship, is a unique name that signifies harmony.

Opha is a rare female name of African origin, derived from the Ewe language and meaning 'firstborn daughter'.

Ophelia is an elegant Greek name meaning 'helper', derived from 'ophthalmos' meaning 'eye'.

Ophir is a rare Hebrew boys' name derived from the word "Ōp̄hîr," meaning "fine gold" or "gold dust." It appears in the Old Testament of the Bible and signifies wealth and prosperity.

Opie is a rare English given name derived from Middle English "opie," meaning "face" or "countenance." It was likely given to children with distinctive facial features, originally used among lower classes in the late Middle Ages. Today, it's associated with creativity and independent self-expression.

Ople is an uncommon feminine given name with uncertain origin and meaning. Some believe it may be derived from Dutch surnames like Op den Leij or Op de Ley, potentially meaning "from the ley" or "by the ley". Alternatively, it could be seen as a shortened form of Shakespeare's Ophelia. Despite its unclear history, Ople stands out for its unique sound and rarity.

Oplis is a rare, distinctive name of uncertain origin, deriving from Greek, conveying the meaning 'many kinds'.

Optimus is a strong and unique name of Latin origin, meaning 'the best', associated with leadership, excellence, and heroism throughout history and popular culture.

Or is a Hebrew name meaning 'light', found in the Bible as one of Zebulun's sons.

Ora is a Hebrew name meaning 'light'.

Orace is a rare, Greek-origin name derived from 'Horos,' meaning 'limit' or 'boundary', personifying boundaries in Greek mythology.

Oracio is a rare male given name derived from Latin "orare," meaning "to pray." Its origins suggest hopes for spiritual devotion.

The name Oracle is of Greek origin, meaning 'one who sees or understands', derived from the Greek word 'Orakeion'. In ancient Greece, Oracles were priestesses serving as intermediaries between gods and humans.