Samuel J. Williamson (November 6,1939, in West Reading, Pennsylvania – April 25, 2005) was an American physicist and neuroscientist.
Williamson was a co-developer of magnetic source imaging (MSI), and used this technique throughout his life to visualize and study brain activity especially as it relates to vision and hearing.
He received both his bachelor's degree in physics and his Ph.D. from the Massachusetts Institute of Technology (MIT), in 1961 and 1965 respectively.
Dr. Williamson started his professional career at MIT's Francis Bitter National Magnet Laboratory as a staff scientist, and remained there until 1971 when he joined the physics department at New York University (NYU).
In 1981 he was elected a Fellow of the American Physical Society.