Łaskarzew [wasˈkaʐɛf] is a town in Garwolin County (15 kilometers from Garwolin), Masovian Voivodeship, Poland, with 4,948 inhabitants (2004). It is located on the Promnik river, which is a tributary of the Vistula, near the Garwolin Forests, on the border of historic Polish provinces of Lesser Poland and Mazovia.