Hartsock is an American surname possibly derived from Herzog. Notable people with the surname include:
Ben Hartsock (born 1980), American football player Ernest Hartsock (1903–1930), American poet Jeff Hartsock (born 1966), American baseball player Marcia K. Hartsock (1941–2012), Guamanian politician Nancy Hartsock (1943–2015), American philosopher Robert W. Hartsock (1945–1969), American soldier and Medal of Honor recipient