Dahlmann is a surname. Notable people with the surname include:
Annika Dahlmann (born 1964), former Swedish cross country skier Friedrich Christoph Dahlmann (1785–1860), German historian and politician Hagbarth Dahlmann (1901–1974), Danish field hockey player Hermann Dahlmann (1892–1978), influential German aviation administrator during the Third Reich Kurt Dahlmann (1918–2017), German pilot, attorney, journalist, newspaper editor and political activist Nicolas Dahlmann (1769–1807), French cavalry general of the Napoleonic wars Sandra Dahlmann (born 1968), German Olympic swimmer
See also Dahlman (disambiguation)