Oade – Oagje – Oai – Oaijer – Oalderk – Oalf – Oalt – Oame – Oamel – Oane – Oark – Oarnd – Oast – Oat – Oate – Obbe – Obbo – Obbrich – Obe – Oberon – Obert – Obke – Obrecht – Obt – Ocke – Ocker – Ocko – Od – Oda – Odacer – Odalbart – Odalbert – Odalbrand – Odalbrecht – Odalfried  – Odalric – Odalrich – Odalrik – Odar – Odard – Odbert – Odd – Odde – Oddie – Oddin – Oddino – Oddo – Oddone – Ode – Odel – Odelbert – Odelbrand – Odelbrecht – Odelgaar – Odelhard – Odelin – Odell – Odelof – Odelric – Odelrich – Odelrick – Odelrik – Odemar – Oderic – Oderik – Odewald – Odewijn – Odfried – Odgeer – Odger – Odhinn – Odhran – Odiel – Odil – Odilard – Odilas – Odilbald – Odilbert – Odilhard – Odilio – Odilo – Odilon – Odin – Odinel – Odinn – Odino – Odinon – Odkar – Odmar – Odo – Odoacer – Odoakar – Odoard – Odolf – Odolric – Odomaar – Odomar – Odon – Odoraan – Odoram – Odoran – Odoric – Odowakar – Odowaker – Odran – Odulf – Odur – Oduvald – Oduwald – Odwald – Odward – Odwijn – Odwin – Odwulf – Ody – Oebe – Oebel – Oebele – Oeber – Oeble – Oede – Oedger – Oeds – Oedse – Oedsen – Oedur – Oege – Oeke – Oekele – Oekle – Oelbert – Oele – Oelf – Oelke – Oelse – Oem – Oene – Oeno – Oense – Oentjo – Oentse – Oenze – Oep – Oepke – Oept – Oetse – Offe – Offert – Offo – Ofke – Ofko – Ofrit – Oger – Oggery – Ogier – Ogmund – Ohlsen – Oike – Ok – Oke – Okel – Okele – Okke – Okker – Okkie – Okko – Ola – Olaf – Olafr – Olaus – Olav – Olave – Olavi – Olaw – Olberich – Olbert – Olbrand – Olbrecht – Olbren – Olchert – Olde – Oldegar – Olderick – Olderik – Oldrad – Oldrich – Oldrick – Oldrik – Oldwig – Ole – Olef – Oleifr – Olen – Olery – Olf – Olferd – Olfert – Olfried – Olfry – Olger – Olgerd – Olgert – Olgierd – Olif – Olin – Olindor – Olke – Olken – Olla – Olle – Ollee – Ollegaar – Olleric – Ollerk – Olli – Ollo – Ollu – Olmar – Olmer – Olmo – Olof – Oloff – Olov – Olowin – Olrik – Oltman – Oltmann – Oluf – Olvan – Olverd – Olvert – Omaar – Omar – Ome – Omeer – Omer – Omke – Omko – Ommar – Omme – Ommeke – Ommo – One – Oneke – Oneko – Onke – Onko – Onne – Onneke – Onnen – Onno – Onolf – Ontje – Onulf – Oolbert – Oolbrand – Oolbrandt – Oolbrecht – Oolbren – Oole – Oom – Oomar – Oomer – Oomke – Oopke – Oord – Oort – Oortwijn – Oost – Oran – Orderic – Ork – Orlan – Orland – Orlov – Orm – Ormin – Orre – Ortahar – Ortar – Orte – Ortfried – Ortger – Orthar – Orther – Ortiel – Ortil – Ortlieb – Ortliep – Ortnid – Ortnit – Ortold – Ortolf – Ortolt – Ortulf – Ortvin – Ortwald – Ortwein – Ortwijn – Ortwin – Osbald – Osbarn – Osbeorn – Osbern – Osbert – Osborn – Osborne – Osbrecht – Oscar – Oscytel – Oseberne – Osewald – Osewijn – Osewout – Osfried – Osgar – Osier – Oskar – Oskell – Osketel – Osman – Osmand – Osmann – Osmar – Osmin – Osmond – Osmont – Osmund – Oso – Osric – Ossel – Ossie – Ost – Osten – Ostiaan – Ostian – Ostien – Ostrald – Ostrebert – Ostwald – Osva – Osvald – Osvaldo – Osvaltti – Osvi – Osvin – Oswal – Oswald – Oswaldo – Oswall – Osweald – Oswell – Oswin – Oswold – Oswoud – Oswout – Ot – Otakar – Otbert – Otes – Otfrid – Otfried – Otgar – Otger – Othari – Othelm – Other – Othes – Othger – Othillo – Othmar – Otho – Othon – Oti – Otil – Otilo  – Otker – Otl – Otli – Otloh – Otmar – Otmer – Otmund – Oto – Otokar – Otse – Otso – Ott – Ottar – Otte – Ottel – Ottenon – Otter – Ottfried – Ottheinrich – Ottheinz – Otthermann – Ottho – Otti – Ottie – Ottis – Ottli – Ottmar – Otto – Ottocar – Ottokar – Ottomar – Otton – Ottow – Otu – Otvard – Otvin – Otwald – Otward – Otwijn – Otwin – Oubrecht – Oud – Oudart – Oude – Oudo – Ouein – Ouen – Ouko – Ouren – Ourens – Ouri – Ourik – Oustrille – Out – Outger – Outi – Outje – Outjer – Outker – Outse – Ouwe – Ouwert – Ouwin – Ouwo – Ove – Owain – Owayne – Owe – Owein – Owen – Oweyn – Owin – Owine – Owney – Owyn – Owyne – Oz – Ozwell – Ozzie – Ozzy