Harry John Haiselden (March 16, 1870 – June 18, 1919) was an American physician and the Chief Surgeon at the German-American Hospital in Chicago, Illinois.

Haiselden gained notoriety in 1915, when he refused to perform needed surgery for children born with severe birth defects and allowed the babies to die, in an act of eugenics.

[6] Haiselden then began a vigorous publicity campaign in defense of his decision, turning the Bollinger case into a major news story across the United States.

Settlement house movement leader Jane Addams spoke out against him, as well as Cornelia Brant, Dean of New York Medical College and Hospital for Women.

"It is the possibility of happiness, intelligence and power that give life its sanctity," she wrote, "and they are absent in the case of a poor, misshapen, paralyzed, unthinking creature.

[9] He was cleared by a coroner's jury, but was eventually thrown out of practice by the Chicago Medical Board for his lecture series on eugenics and promotion of The Black Stork.