Kiernozia [kʲɛrˈnɔʑa] is a town in Łowicz County, Łódź Voivodeship, in central Poland.^[1] It is the seat of the gmina (administrative district) called Gmina Kiernozia. It lies approximately 20 kilometres (12 mi) north of Łowicz and 61 km (38 mi) north-east of the regional capital Łódź. It is located in the historic region of Mazovia.

Kiernozia
Town
Kiernozia Palace
Flag Coat of arms
Kiernozia
Coordinates: 52°16′7″N 19°52′12″E / 52.26861°N 19.87000°E / 52.26861; 19.87000
Country	Poland
Voivodeship	Łódź
County	Łowicz
Gmina	Kiernozia
Population
• Total	930
Time zone	UTC+1 (CET)
• Summer (DST)	UTC+2 (CEST)
Vehicle registration	ELC
Voivodeship road

It is the birthplace (and burial place) of Marie Walewska (née Łączyńska), a mistress of Napoleon Bonaparte.