Dutch mill in Tczew, Historical windmill in Tczew, Poland.

The Dutch mill in Tczew is a wooden post mill with a timber frame, built on an octagonal plan and clad in boards. It has a cellar, and its rotating cap carries five sails, a rare number. The structure stands as a preserved example of 19th-century milling technology.

The mill dates from the 19th century; guidebooks give 1806 as the year of construction, though no document confirms it. It was reconstructed in 1950 and entered the heritage register on 18 January 1960 under number 143. In 1983 it was sold with the adjoining building to Teodozja and Jan Trojak, who renovated both.

The mill's name refers to the Dutch (holenderski) type of post mill, a construction form brought to Polish lands by settlers from the Low Countries. Since 1983 it has belonged to Teodozja and Jan Trojak, who renovated both the mill and the adjoining building; their heirs offered it to the city in 2016.

The mill stands in Tczew, at coordinates 54.08964, 18.78367, and is listed in the monument register under number 143, so it is seen from the outside rather than entered. It was sold in 1983 with the adjoining building to Teodozja and Jan Trojak, who renovated both; in 2016 the heirs offered the mill to the city for one million zloty.

The mill's five sails sit on a rotating cap, an arrangement rarely seen on Dutch-type mills. The building was sold in 1983 with the adjoining house to Teodozja and Jan Trojak, who renovated both; in 2016 the heirs offered the mill to the Tczew authorities for one million złoty.