Konrad Emil Bloch ForMemRS[1] (German pronunciation: [ˈkɔnʁaːt ˈblɔx] ⓘ; 21 January 1912 – 15 October 2000) was a German-American biochemist.

Bloch received the Nobel Prize in Physiology or Medicine in 1964 (joint with Feodor Lynen) for discoveries concerning the mechanism and regulation of the cholesterol and fatty acid metabolism.

[2] Bloch was born in Neisse (now Nysa, Poland), in the German Empire's Prussian Province of Silesia into a Jewish family.

In 1934, due to the Nazi persecutions of Jews, he fled to the Schweizerische Forschungsinstitut in Davos, Switzerland, before moving to the United States in 1936.

[5] After retirement at Harvard, he served as the Mack and Effie Campbell Tyner Eminent Scholar Chair in the College of Human Sciences at Florida State University.

[2] Bloch shared the Nobel Prize in Physiology or Medicine in 1964 with his compatriat Feodor Lynen, for their discoveries concerning the mechanism and regulation of the cholesterol and fatty acid metabolism.