Frank Spooner Churchill (August 26, 1864 – February 27, 1946) was an American paediatrician who took a special interest in infant feeding.

[3] He left his position at Children's Memorial Hospital in 1917 to serve as a major in the United States Army during the First World War.

[1] Churchill established the first infant's clinic at Children's Memorial Hospital[3] and was an advocate of breast feeding[5][6] but believed that the milk could be spoiled if it was taken at the wrong frequency or if the mother was nervous or anxious, rendering her "utterly unfit to serve the purpose of a cow".

[11] Before the Second World War, he invited into his home Jewish psychiatrists from Germany and Austria who had an interest in childhood development and were refugees from the Nazis.

[12] He asked the U.S. government to establish guidance clinics for children across Europe in order to treat the psychological effects of the war before they became permanent.