Oceana Oda Odalinde Odila Odilberta Odilgard Odina, Odine Okka Olegard Olinde Olivia Olly Olympia Ophelia Orthia Ortlinde Ortrud Osberta Osmunde Oswalda, Oswalde Otberga Otfriede Othilde Otlinde Ottilie Ottona Otwine Ozeana O Octavia Odalberta Odette Odilberga Odile Odilia, Odilie Oke Oktavia Olga Oliva Olla, Olli Olofa Oona Orania Orthilde Ortraud Ortrun Ositha Osterlind Oswina, Otburga, Otgunde Othona Otti Ottogebe Ottwine Oxana