BOYS

• Octavian - der. from octavius "eighth". Ancient Roman, Romanian.
• October - the month of October, whose name comes from the Latin "Octo" (eight). English.
• Orion - name of a constellation. Greek mythology, Greek.
• Oscar - deer lover; god spear. English, Irish, Portuguese (Brazilian), Scandinavian, Irish Mythology.
• Oskar - form of Oscar. Scandinavian, German, Polish, Slovene.

GIRLS

• Octavia - fem. form of Octavius "eighth". Ancient Roman, English, Spanish.
• Odette - wealth, fortune. French.
• Olympia - fem. form of Olympos, the name of the mountain home of the Greek gods. Greek, Slovak.
• Opal - the name of a gem, whose name is derived from the Sanskrit "Upala" meaning jewel. English.
• Ottilie - wealth, fortune. Germen.