Melby Mølle) is a smock mill located at Melby, Halsnæs Municipality, North Zealand, some 60 kilometres (37 mi) north west of Copenhagen, Denmark.

The windmill was built in 1878 for Hans Petersen, a sailor born in 1846 at Sjællands Odde.

[1] The windmill consists of an octagonal tower clad in shingles and topped by an ogee cap.

The mill stands on a stone case, which has an underpass for wagons.

The windmill is owned by Halsnæs Municipality.