Kōichirō Genba is a Japanese politician who served as Minister for Foreign Affairs from 2011 to 2012. He is a member of the House of Representatives in the Diet, and was a member to the Democratic Party of Japan and its successor Democratic Party until its merger in 2018. He left the party briefly before the merger, and joined the Group of Independents House of Representatives caucus of other former Democrats a few days later. A native of Tamura, Fukushima and graduate of Sophia University, he was later accepted into the prestigious Matsushita Institute of Government and Management, an institution founded by Panasonic founder Konosuke Matsushita which grooms future civic leaders of Japan. Genba was elected to the House of Representatives for the first time in 1993 after serving in the assembly of Fukushima Prefecture for one term. In September 2011 he was chosen as Minister for Foreign Affairs in the cabinet of Prime Minister Yoshihiko Noda.

The minister for foreign affairs is a member of the cabinet of Japan and is the leader and chief executive of the Ministry of Foreign Affairs. The minister is responsible for implementing Japan's foreign policy and is also a statutory member of the National Security Council. The minister is nominated by the prime minister and is appointed by the emperor of Japan.