William Henry Larrabee (February 21, 1870 – November 16, 1960) was an American physician and politician who served six terms as a U.S. Representative from Indiana from 1931 to 1943.

Larrabee served as the secretary of Hancock County Board of Health in 1917–18, and on the city council of New Palestine, 1916–20.

In between July 25 of 1940 when France surrendered, and June 22 of 1941 when the Nazis invaded the Soviet Union, Britain was effectively alone.

During this time Larrabee, as well as his fellow Indiana congressmen John W. Boehne Jr. campaigned explicitly in favor of giving Britain any aid we could.

[1] Larrabee explicitly advocated entering the war on the British side throughout the year before Pearl Harbor.