Ancient Celtic O

ocelo-durom [Ocelodurum] (toponym).

ocelom [Ocelum] (toponym).

ocelos [Ocelus] (theonym).

ocĕlos [Oclos] (anthroponym).

oc-ondĭā-ˠnos [Okondiani] (ethnonym).

oco-neʽā [Oconea] (anthroponym).

ocrās [Ocra; Okras] (oronym).

ocrĭom [Ocrium] (headland toponym).

ogĭā [Ogia] (anthroponym).

ogmiĭos [Ogmios; Ogmius] (theonym).

ogri-genos [Ogrigenus] (anthroponym).

ʽoĭ-ʽenos [Oenus] (fluvial hydronym).

ʽoĭ-istr-ʽuḃnis [Oestrymnis] (oronym).

ʽoĭ-istr-ūmnicos [Oestrymnicus] (hydronym). .

ʽoĭ-istr-ūmni-ˠdis [Oestrymnides] (insular toponym).

oll-ocos [Ollocus] (anthroponym).

ollo-dagos [Ollodagus] (theonym).

ollo-gnātos [Ollognatus] (anthroponym).

ollo-ŭodĭos [Olloudius] (theonym).

oɯbr-encās [Obrincas] (fluvial hydronym).

onnā [Onna] (toponym).

onnom [Onnum] (toponym).

onnos [Onnos] (anthroponym).

ʽon-ūɯ-aŭā [Onuaua] (theonym).

opĭ-ānos [Oppianos] (anthroponym).

orbĭo-talos [Orbiotalus] (anthroponym).

ʽorcā-ˠdis [Orcades]

ʽorcās [Orcas] (headland toponym).

ʽorcĭā [Orcia] (theonym).

ʽorcunĭā [Orcynia] (sylvan toponym).

or-eᶰ-genās [Oreginae] (toponym).

or-ʽētom [Oretum] (toponym).

orgĭ-agon [Orgiagon] (anthroponym).

or-obĭos [Orobius] (fluvial hydronym).

oro-laŭonom [Orolaunum] (toponym).

or-ʽuɯbĭos [Orobii] (ethnonym).

or-ʽumb-oŭĭos [Orumbouii] (ethnonym).

osbos [Osbus] (anthroponym).

ʽosisămĭos [Osismii] (ethnonym).

ʽosos [Osi] (ethnonym).

ʽotĭo-rīx [Otiorix] (anthroponym).

oŭi-laŭā [Ouilaua] (toponym).

oŭi-laŭis [Ouilauis] (toponym).

oŭo-ˠnĭo-rīx [Ouniorix] (theonym).

oχt-aʽĭā [Oxtaia] (anthroponym).

oχt-ap-it-arom [Octapitarum] (headland toponym).

oχt-āŭos [Oxtaus] (anthroponym).

oχto-durom [Octodurum] (toponym).