Witches' hat
Witch hat, Witches hat, or Witches' hat may refer to:

 Anti-trespass panels, rubber mats with cones or pyramids used by railroads to prevent people from walking on or near tracks
 A hat belonging to a witch (witch hat)
 A turret with a conical roof (see also, witch tower)
 A traffic cone
 A cone shaped playground roundabout that is mounted in such a way that the axis of rotation is free to tilt
 Hygrocybe conica, a small mushroom in the genus Hygrocybe