Obrenje

Occidal

Occidental - Sebastian Hartwig

Octrin - George Schaeffer

Odonien

Olaetyan

Old Albic - Jörg Rhiemeier

Old English

Old Kandar - Tim Hall

Omeina - Michael Poxon

Omnesian - Jordan Kay

Omnial - Amnial

Oneirien - em-Ilu