Gluck (born Hannah Gluckstein; 13 August 1895 – 10 January 1978) was a British painter, who rejected any forename or prefix (such as 'Miss'), as Gluck was gender-nonconforming. Gluck joined the Lamorna artists’ colony near Penzance, and was noted for portraits and floral paintings, as well as a new design of picture-frame. Gluck enjoyed intense lesbian relationships with Nesta Obermer and others. The artist's joint self-portrait with Obermer ('Medallion') is viewed as an iconic lesbian statement.