<em>Portrait of Madame Cézanne with Loosened Hair</em> (or Madame Cézanne with Unbound Hair) is an oil-on-canvas painting by French artist Paul Cézanne, variously dated from the mid 1870s to the early 1890s. Although the model, his wife Hortense Fiquet, was not supportive and did not understand or take an interest her husband's work, this is one of forty-four portraits in which she sat for him from 1869.