Michelsohn Dietrich (1879, Riga) — public figure.

Dietrich Michelson graduated from the economics department of the Riga Polytechnical Institute. From 1905 to 1908 he served as chairman of the Kami Society. From 1925 he was a member of the council and later a member of the board of Nord Bank. In 1928–1930 he was a member of the Financial Commission of the Riga City Administration. From 1924 he served as chairman of Bikur Holim and of the curatorium of the Jewish Hospital, and was a member of the board of the Bank of Jewish Homeowners. During the expulsion from Courland, he was a member of the Refugee Committee. He was a member of Moishav Zkeinim and a number of Jewish philanthropic organizations, and a member of the public commission for the distribution of firewood and matzah. In 1933 he was re-elected as elder of the First City Choral Synagogue on Peitavas Street.