Torahiko Terada was a Japanese physicist and author who was born in Tokyo. He was a professor at Tokyo Imperial University, a researcher at RIKEN, and worked on a wide range of topics in physics. He was also a professor at the Earthquake Research Institute.

Riken is a national scientific research institute in Japan. Founded in 1917, it now has about 3,000 scientists on seven campuses across Japan, including the main site at Wakō, Saitama Prefecture, on the outskirts of Tokyo. Riken is a Designated National Research and Development Institute, and was formerly an Independent Administrative Institution.