Onatsfeld (Municipality / Baden-Wuerttemberg)
Ondrup (Municipality / North Rhine-Westphalia)
Önkfeld (Municipality / North Rhine-Westphalia)
Onolzheim (Municipality / Baden-Wuerttemberg)
Önsbach (Municipality / Baden-Wuerttemberg)
Onsdorf (Municipality / Rhineland-Palatinate)
Onstmettingen (Municipality / Baden-Wuerttemberg)