Schack August Steenberg Krogh (Grenaa, 15 november 1874 – Kopenhagen, 13 september 1949) was een Deense arts en dierkundige. ###>Schack August Steenberg Krogh ForMemRS (November 15, 1874 – September 13, 1949) was a Danish professor at the department of zoophysiology at the University of Copenhagen from 1916-1945.