Siwianka [ɕiˈvjaŋka] is a village in the administrative district of Gmina Kołbiel, within Otwock County, Masovian Voivodeship, in east-central Poland.

[1] It is approximately 6 kilometres (4 mi) north-west of Kołbiel, 12 km (7 mi) east of Otwock, and 33 km (21 mi) south-east of Warsaw.

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