Haseborgsche Mühle, Dutch windmill in Möhlenwarf, Germany.

The Haseborgsche Mühle is a two-storey Dutch smock mill in Möhlenwarf, a village in the Weener area. Its round red-brick base, pierced by small rectangular windows, carries a wooden gallery with a white cross-braced railing; above it the tarred smock tower tapers upward and holds four sails and a small fantail on a metal frame.

The mill was established in 1899 by Everwien ter Haseborg and incorporated materials from an earlier structure that had previously stood along the Leda river. This reuse of existing components was a practical approach when creating this facility.

The mill's name comes from the ter Haseborg family, who ran it across three generations; the intended heir, Everwien ter Haseborg, fell in World War II, so a nephew of the same name took over in 1949. A bakery and grocery store were run alongside the mill, staying open into the 1990s. The building has been a private residence since 1972 and was sold by Karl Dall in 2010.

The mill stands in Möhlenwarf, one of two Dutch windmills in the Weener area, and is now a private residence, so it is viewed from the street rather than entered. Its brick base, gallery and sails are best seen from the open ground around the village.

The mill's last miller, Everwien ter Haseborg, bought the building outright only in 1962, thirteen years after taking over the business from his uncle. The bakery and grocery stayed open into the 1990s, long after milling stopped in 1972. Comedian Karl Dall then bought it and converted it into a dwelling, selling it on in 2010.