Chmielonek [xmjɛˈlɔnɛk] is a village in the administrative district of Gmina Krzynowłoga Mała, within Przasnysz County, Masovian Voivodeship, in east-central Poland. It lies approximately 19 kilometres (12 mi) north-west of Przasnysz and 107 km (66 mi) north of Warsaw.

During Nazi Occupation it was part of New Berlin military training area