Diederich is both a German surname and a masculine German given name. Notable people with the name include:
Surname Benjamin W. Diederich (1903–1974), American politician Bernard Diederich (1926–2020) American author, journalist and historian Bim Diederich (1922–2012), Luxembourgish cyclist François Diederich (1952–2020), Luxembourgish chemist Jason Diederich, Australian Paralympic swimmer Nils Diederich (born 1934), German politician Paul Diederich (born 1959), Luxembourgish mycologist August Diederich (born 1997), German musician and rapper who goes by the stage name Ski Aggu
Given name Diederich Hinrichsen (born 1939), German mathematician Diederich Krug (1821–1880), German classical pianist and composer
See also Diederich College of Communication, primary college at Marquette University in Milwaukee, Wisconsin Diederichs Dietrich Diedrich Dieterich