Sidden
Sidden is a German place name:
- Sidden , until 1938 Sydden , district of Oletzko / Treuburg, East Prussia, since 1945: Żydy (Kowale Oleckie) , village in the Powiat Olecki, Warmian-Masurian Voivodeship, Poland
- Sidden , historical name of Sieden , Lyck district, East Prussia, now: Mazurowo , village in the powiat Ełcki, Warmian-Masurian Voivodeship, Poland