Dittrich is a variant of the German name Dietrich. It occurs as a surname of ethnic Germans in Silesia. Notable people with the surname include:
Barbara Dittrich (born 1964), American politician Boris Dittrich (born 1955), Dutch politician and human rights activist Denise Dittrich (born 1957), American Democratic politician Franz Dittrich, Austrian pathologist Klaus Dittrich, German computer scientist Olli Dittrich, German actor and comedian P. Dittrich (fl. 1880–1918), German photographer in Egypt Paul-Heinz Dittrich (1930–2020), German composer and academic teacher Rudolph Dittrich, German entomologist Raik Dittrich, East German biathlete Stefan Dittrich (1912–1988), German politician Thomas Dittrich (born 1954), German hurdler Werner Dittrich (born 1937), German weightlifter Wolfgang Dittrich, triathlete