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