Ojrzeń [ˈɔi̯ʐɛɲ] is a village in Ciechanów County, Masovian Voivodeship, in east-central Poland.

It is the seat of the gmina (administrative district) called Gmina Ojrzeń.

[1] It lies approximately 13 kilometres (8 mi) south-west of Ciechanów and 69 km (43 mi) north-west of Warsaw.

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