Oland, Hallig (Municipality / Schleswig-Holstein)
Oldenborstel (Municipality / Schleswig-Holstein)
Oldenburg in Holstein (Town / Schleswig-Holstein)
Oldenbüttel bei Hanerau-Hademarschen (Municipality / Schleswig-Holstein)
Oldendorf, Holstein (Municipality / Schleswig-Holstein)
Oldenhütten (Municipality / Schleswig-Holstein)
Oldenswort (Municipality / Schleswig-Holstein)
Oldersbek (Municipality / Schleswig-Holstein)
Olderup (Municipality / Schleswig-Holstein)
Olderupfeld bei Husum, Nordsee (Municipality / Schleswig-Holstein)
Oldsum (Municipality / Schleswig-Holstein)
Ölendorf bei Oldenburg in Holstein (Municipality / Schleswig-Holstein)