Takashi Yamamoto (山本 孝史, Yamamoto Takashi, July 7, 1949 – December 22, 2007) was a Japanese politician of the Democratic Party of Japan, a member of the House of Councillors in the Diet (national legislature). On May 22, 2006, Yamamoto announced in a speech in the House of Councilors plenary session that he was infected with cancer. He made an effort for the early conclusion of "The Basic Law to Promote Anti-Cancer (Cancer Control Act) ja:がん対策基本法". On December 22, 2007, Yamamoto died of thymic carcinoma. His seat in the House of Councillors was taken over by Hisako Ōishi on December 28.