Otto Erich Deutsch, Austrian musicologist and scholar (d. 1967)

Otto Erich Deutsch (5 September 1883 – 23 November 1967) was an Austrian musicologist. He is known for compiling the first comprehensive catalogue of Franz Schubert's compositions, first published in 1951 in English, with a revised edition published in 1978 in German. It is from this catalogue that the D numbers used to identify Schubert's works derive.