Duły is a village in the administrative district of Gmina Olecko, within Olecko County, Warmian-Masurian Voivodeship, in north-eastern Poland. It lies approximately 6 km west of Olecko and 130 km east of the regional capital Olsztyn. It is located on the northern shore of Dobskie Lake in the region of Masuria.

History

Duły was founded in 1558 by Jan Duła, who bought land to establish a village. It was named after the founder. As of 1600, the population of the village was solely Polish. In 1939, it had a population of 260.