Brian Kent Kobilka (born May 30, 1955) is an American physiologist. He is best known for his work with G protein-coupled receptors, for which he was awarded the 2012 Nobel Prize for Chemistry with Robert Lefkowitz.He is currently a professor in the department of Molecular and Cellular Physiology at Stanford University School of Medicine. He was named a member of the National Academy of Sciences in 2011. 