Franz Servatius Bruinier (13 May 1905 - 31 July 1928) was a pianist and composer. He was the first professional composer to collaborate with Bertolt Brecht. On account of his early death from tuberculosis, and because the results of his work went unpublished or were published only without attribution in respect of the musical score, his contribution went unrecognised by mainstream Brecht scholarship till the mid 1970s.