Ken Terajima was a Japanese Vice Admiral and politician. He was also known for serving as the Minister of Communications from 18 October 1941 to 8 October 1943, and Minister of Railways from 18 October 1941 to 2 December 1941, in the Tōjō Cabinet.

The Ministry of Communications was a Cabinet-level ministry in the Empire of Japan. Its modern successors include the Ministry of Internal Affairs and Communications, Japan Post and Nippon Telegraph and Telephone