Mikishi Daimon (大門 実紀史 Daimon Mikishi, born January 10, 1956) is a Japanese politician of the Japan Communist Party, a member of the House of Councillors in the Diet (national legislature). A native of Kyoto, Kyoto and dropout of Kobe University, he was elected to the House of Councillors for the first time in 2001 after an unsuccessful run in 1998.