S. Claiborne "Clay" Johnston is the former Dean of the Dell Medical School and Frank and Charmaine Denius Distinguished Dean's Chair at the University of Texas at Austin.

[1][2] Dell Medical School opened in 2016 with Johnston being named as the inaugural dean in January 2014[3] In July 2021, Johnston announced that he would step down as the dean of the Dell Medical School.

[4] Johnston received a BS in Physics from Amherst College before studying medicine at Harvard University.

[5] He has also received a Ph.D. in epidemiology from the University of California, Berkeley, and practices medicine as a neurologist.

[5] Prior to his appointment at Dell Medical School, Johnston served as Vice Chancellor of Research at UCSF.