Susumu Hagiwara

Susumu Hagiwara (; November 6, 1922 – April 1, 1989) was a Japanese-born American physician and neuroscientist.

Hagiwara was born and raised in Hokkaido, Japan, attending the University of Tokyo for his M.D. and Ph.D. degrees. He became a professor at the Tokyo Medical and Dental University before migrating to the United States to serve as professor for both the University of California, San Diego and University of California, Los Angeles.

Dr. Kenneth Shine, dean of the UCLA School of Medicine, said: "Susumu Hagiwara revolutionized our understanding of how calcium moves across cell membranes, basic discoveries which lead to the calcium-blocking agents currently used to treat patients with heart disease, migraine and stroke". and, posthumously, the Order of the Rising Sun from the Japanese government.

Hagiwara died of a heart attack at his Los Angeles home on April 1, 1989.