A Bollenhut (German: [ˈbɔlənˌhuːt], literally "ball-hat") is a formal headdress with distinctive woollen pompoms worn since c. 1750 by Protestant women as part of their folk costume or Tracht in the three adjoining Black Forest villages of Gutach, Kirnbach and Hornberg-Reichenbach.
Young girls before confirmation (Gutach and other parishes in vicinage were part of Württemberg until 1804 and were Protestant, unlike the majority of the Black Forest) and old women wore only the mob cap.
In the late 18th century, apart from several mob caps, the Schühut [de] and Gupfhut, which were customary in the County of Hauenstein, were associated with the folk costume of the Black Forest.
In 1841 following a study trip through the Black Forest, Théodore Valerio published, through the Frères Gihaut in Paris, a lithograph of a couple from Hornberg wearing their local costume, which showed an early version of the Bollenhut for the first time in France.
At the turn of the 20th century, particularly Hasemann's painting, After Going To Church which showed Bollenhut wearers, was widely publicized in illustrated magazines and picture postcards.