Zenkichi Kojima (小嶋 善吉 Kojima Zenkichi, born May 30, 1947 in Gifu Prefecture) was the mayor of Shizuoka, Shizuoka in Japan until April, 2011, when he was succeeded by Tanabe Nobuhiro. A graduate of the University of Tokyo, he was first elected mayor in 1998 after serving in the assembly of Shizuoka Prefecture for three terms.
In 1971, after college, he went to work at the Dai-Ichi Kangyo Bank (now Mizuho Bank) where he stayed until 1979. In 1979 he was elected to the Shizuoka Prefectural Assembly.