Łomna is a village in the administrative district of Gmina Czosnów, within Nowy Dwór County, within the Warsaw metropolitan area, in Masovian Voivodeship, in east-central Poland. It is situated on the left bank of the Vistula River, approximately south-east of Czosnów, south-east of Nowy Dwór Mazowiecki, and north-west of Warsaw.
History In 1135, the village was granted to the abbey in Czerwińsk nad Wisłą.
In 1827, the village had a population of 465.
A khachkar was unveiled in Łomna in 2023 (see also: Armenians in Poland).
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