Siestrzanki is a village in the administrative district of Gmina Jedwabne, within Łomża County, Podlaskie Voivodeship, in north-eastern Poland. It is approximately 8 km north-east of Jedwabne, 27 km north-east of Łomża and 56 km north-west of the regional capital Białystok. Cities, towns and places near Siestrzanki include Witynie, Kucze Male-Trzcianka, Konopki Chude and Kucze Duze. The closest major cities are Sosnowiec, Bialystok, Hrodna and Torun.