Łyse [ˈwɨsɛ] is a village in Poland, situated in the Masovian Voivodeship, in Ostrołęka County, and in Gmina Łyse, by the road 645 between Myszyniec and Nowogród. It lies approximately 34 kilometres (21 mi) north of Ostrołęka and 133 km (83 mi) north of Warsaw.

Łyse
Church of Saint Anne
Łyse
Coordinates: 53°21′51″N 21°33′54″E
Country	Poland
Voivodeship	Masovian
County	Ostrołęka
Gmina	Łyse
Population  (2006)
• Total	2,000
Time zone	UTC+1 (CET)
• Summer (DST)	UTC+2 (CEST)
Postal code	07-437
Car plates	WOS

In the years 1975–1998, Łyse belonged to the Ostrołęka Voivodeship.

Character

The village is a center of Kurpiowski folk art with a 19th-century wooden church that has a polychrome interior. Mass is held in this church only on special occasions; regular mass has been held in the nearby modern church, Chrystusa Króla Wszechświata, since dedication in 2000.

The village has the lowest unemployment rate in Ostrołęka County, due in no small part to the local meat packing industry.

Easter in Łyse

Every year a Palm Sunday (the week before Easter) festival is celebrated here. The highlight of the festival is a contest for the most beautiful palm. Traditionally, the hand-made flowers of the palm are begun at the beginning of Lent. During the festival, one can experience Kurpiowski traditions by, among others: Kurpiowski wycinanki, folk music and dance, and tasting bread slices with lard and pickles.