Dietrichson is a surname. Notable people with the surname include:
Espen Dietrichson (born 1976), Norwegian artist Gustav Dietrichson (1855–1922), Norwegian theologian and bishop Jan W. Dietrichson (born 1927), Norwegian philologist Johannes Wilhelm Christian Dietrichson (1815–1883), Norwegian Lutheran minister Lorentz Dietrichson (1834–1917), Norwegian poet and historian of art and literature Oluf Christian Dietrichson (1856–1942), Norwegian explorer and military officer Phyllis Dietrichson, fictional character in the two film adaptations of James M. Cain's novella Double Indemnity
See also Dietrich