James Batcheller Sumner (November 19, 1887 - August 12, 1955) was an American chemist. He shared the Nobel Prize in Chemistry in 1946 with John H. Northrop.

Born in Canton, Mass to a family of Puritans, Sumner graduated from Harvard College in 1910.

External link

• James B. Sumner - biography http://www.nobel.se/chemistry/laureates/1946/sumner-bio.html