Bruno Maria Adler (14 October 1888 – 27 December 1968) was a German art historian and writer. He taught art history in Weimar and lectured about it at the Bauhaus. Adler fled Germany after the Nazis seized power and emigrated to England, where he worked first at a German-Jewish refugee school in Kent, then as a writer with the German Service of BBC Radio.
Adler was born to Jewish parents in Carlsbad, Bohemia. His mother was Therese Adler (née Hirsch) and his father was Moritz Adler, editor and critic with the social democratic newspaper, Volkswille and an elected representative. Adler attended gymnasium in Carlsbad and Prague.
From 1910 to 1916, he studied art history, the history of literature, and philosophy at universities in Vienna, Erlangen and Munich, acquiring his doctorate in 1917 with a dissertation on the origin and beginning of woodcuts. From 1919 to 1924, Adler lectured on art history at the Bauhaus and between 1920 and 1930, he taught art history at the Weimar Saxon-Grand Ducal Art School. His association with Johannes Itten, who also taught at the Bauhaus, led to him publishing and editing Utopia: Dokumente der Wirklichkeit ("Utopia: Documents of Reality"). This included translations by Adler from the Rigveda and work by Nicholas of Cusa. During this period, Adler also edited writings by Adalbert Stifter and Matthias Claudius.